I'm glad to see Doom's update but sorry for his troubles. I very much enjoyed reading his blog when I found it a couple of years back and had wondered how it worked out for him. I expected that he was in good financial shape given the market since he FIREd in 2015. That seems to be the case, even under his new circumstances.
I agree that his FIRE experience to date shouldn't be regarded by him or anyone else as any kind of failure. I can't recall where I read the line recently but it was in the context of how we should want to rear our children, and to paraphrase it was that we don't want to raise our kids in a way that they never encounter any difficulties, but rather that we should want to raise them in such a way that they are equipped to handle life's inevitable difficulties. Seems to me that FI/FIRE planning and preparation should be viewed in much the same way. We can't really expect everything to go as planned or as expected, but we should endeavor to build a plan as a framework within which we can exercise flexibility to adapt to changing circumstances.
While I have no opinion about the causes of someone else's specific relationship woes, it does seem like early FIRE does present some challenges both for married and single people as regards their current or future relationships.
I have no idea what the percentage is of people who FIRE and then regret or rethink that choice and return to work or wish that they could return to work either for money or for purpose or just for something to fill the days, but it's probably pretty far from zero.
If a couple FIRE together, it seems only reasonable to expect that rate of disenchantment to be almost double, in that at least one of the pair will discover that it isn't all they hoped or expected it would be. Again, I have no opinion as to whether that was truly the issue faced my Mr. and Mrs. Doom. I'm just talking about probabilities. Two people is double the chance that at least someone isn't going to be happy with it.
Speaking generically, not to Doom's particular situation:
A relationship is hard enough under "normal" circumstances, but if you add an imbalance of perceived work ethic / contribution / ease between the partners, that's got to make things harder. This topic came up on the single mustachians thread a while back. How can you go into a relationship with such an imbalance? Might there be people for whom it is no issue? Sure. But once again to play the probabilities, that number is probably pretty small. Seems really likely that one person is going to develop some resentments toward the other, whether it's the working person or the non-working person.
If you were to present to me a couple, one of whom retired early and the other of whom decided to continue working, I would immediately discount (pretty heavily) the odds of them staying together. One person going to work while the other lounged and played all the time, yet would inevitably benefit from the financial benefits of one party continuing to bring in an income just seems like a problem waiting to happen. I'm sure there are couples that have done it successfully! I get that. I'm just saying that I can see how that would add a stress to a relationship for most people. I wouldn't like being either party in that situation. One person will come to resent the one who doesn't have to work and the other would resent that they are made to feel guilty for not having to work, or feel constrained to not 'flaunt' their freedom by doing fun things without the partner.
In the context of single folk who have already or almost reached FI status with any plan to RE, finding a partner who is either themselves in the same financial position or would be willing to put up with being in a relationship with someone who is in that position seems like a hard nut to crack.
I'm honestly morbidly FASCINATED by this perspective.
A strong marriage should be able to withstand a hell of a lot more than one or more partners retiring because they're privileged enough to be able to afford to.
In a healthy marriage, these decisions would be made collaboratively, if one partner became unhappy, there would be constructive communication about it. I simply and utterly refuse to believe that having enough money to have more choices in life than to continue working can ever possibly damage a strong and healthy marriage. Create challenges? Of course, but all good marriages weather challenges.
Do I think FIRE has the capacity to catalyze the breakdown of a marriage? Sure, but if it does, then I think that's a marriage that would have been in trouble under any significant strain.
Perhaps I'm biased because in my marriage we've faced some serious shit (I literally can't walk right now), and I can't fathom a loving couple crumbling under much, much less difficult circumstances than we've faced, and our marriage has just become stronger through it.
Oh, and I retired because of my disability, but there are multiple high earning jobs I could do from home, but DH has pushed me to not work if I don't absolutely want to because he's happy to earn enough to support both of us. I felt internal pressure to keep earning, but he's really encouraged me to let that pressure go and only do what I will enjoy because he enjoys his job. Also, we both recognize that we're both much better partners now that we have less of a collective focus on work, and more bandwidth for each other. I'm,in particular, a much more present paryner now that my focus isn't so consumed with my demanding career. Basically, DH gets a way more fun wife, so why would he resent me not working???
We're basically leanFI as it is, and our FI planning over the past several years is what makes it SO EASY for us to be able to make these types of decisions.
So FI has made life so much easier, there's no resentment with one partner working, and our marriage has thrived through all of the very difficult challenges. I genuinely can't fathom a loving, supportive, trusting, respectful marriage working any other way.