I would love to go part time, but I'm afraid that by asking, I'd tip my hand and they'd look for someone younger to replace me (I'll be 50 next year). I'm a software developer, and normally the only people who go part time in our environment are within a year or two of retirement. In our work culture, if you're not full-time when you're not close to "normal" retirement age, people view you as not committed enough, and your job is at higher risk.
At 20 to 30 hours a week, I'd more than cover my expenses and still add to my stash. I would use the extra time for lots of things, one of which would be starting a financial advisory firm. I would love to be a part-time advisor within a couple of years and quit my current job. But with my current full-time situation, I'm unwilling to put in nights and weekends building that business and let my outside life suffer. So I'm sitting tight at full-time for another few years until, fingers crossed, the stash grows enough to cover basic expenses without drawing it down by more than 4%.
I wish I could think of a way to pull off the part-time thing without jeopardizing the cushy full-time situation I have right now. I don't have a big enough stash to feel comfortable pulling the plug on my software job. I could take the occasional contract, but I have a lot of experience contracting and I know that in my area, good contracts (short- or long-term) are few and far between. My other option would be to take remote ones and move for a few months or half a year at a time. Not really appealing, when I have a house I really like, a boyfriend at home and two cats. So, I'm making the tradeoff of staying full-time.
If anyone has ideas for how I could pull off the part-time thing in this situation, I would love to hear them. My ideal situation is to somehow get my soon-to-be new employer (our contract is turning over) to suggest I work part-time. If it's their idea, I feel like that's better for my prospects.