Ultimately, I don't have enough to punch my ticket on the infinite salary train. But rather than focus on what I can't do, I find enjoyment in what I can do.
I get to pick my projects and most of my project team members. I can set a flexible daily work schedule--come in late from a doctor's appt or just casual sex and a late breakfast with the wife, bike in early to beat the traffic and enjoy the morning views, take a long lunch to socialize, work out, or play rec league games, work from home to meet the repairman, etc. I can opt for business travel domestically, internationally, or not at all with no repercussions (plays into the project selections, of course). I can present new ideas that my manager will discuss, critique, and promote--the decision is usually based on timing and the practicality of my idea. I can eat lunch, socialize, and work with a lot of smart people doing really cool stuff.
When you're enjoying life as is, the incentive and "longing" for something different is infrequent and barely louder than a whisper. Would I feel differently if I were completely ready to FIRE? Maybe but not certainly.