My primary driver is to have more time to spend with family and friends, and I want to be healthy enough to enjoy it. I don't want to be a person who scrimps her whole life to achieve retirement at 67, only to have my health fail and not be able to enjoy it. My husband is older. I want to enjoy adventures with him while we're young enough to do it.
My current job is okay, but boring. But it pays well, has a great 401K match and bennies and I see it getting me to FIRE. It's in accounting. I may explore temporary assignments for a few years to help the coffers. It is also a socially isolated job, and I have recognized this and am working on finding something that is less so.
But when I'm at work all I can daydream about is having the freedom to "putter." I think my ideal day would involve getting up a couple of hours later, going running, running "errands" (public library, grocery), doing something for other people (probably volunteering at the library) so I can have some social interaction, puttering in my garden, making meals in my kitchen while I listen to NPR. I also dream about going to technical college and studying landscape design. I could spend my days puttering in gardens, talking to people about gardens, and reading about the greats.