Yeah, that's a hard one. I would probably work two more years, but your expenses are so low, I'm not sure it's worth it. But if you just "don't love" your life and opposed to "hate" your life, I'd still probably stick it out, even with your expenses, for that extra cushion. I'm in a similar situation (except my expenses are way higher and my savings way lower, so really not all that similar), but I have chosen to first go part-time at my current job to see if that is increasing my overall life satisfaction. It helps, but it still doesn't feel like enough, so now I am contemplating (and applied for!) a job that (I hope) will be more intrinsically rewarding, but pays less.
For me, the ultimate goal is not to stop working as soon as possible, but to get to the point where I do the kind of work I want, for as much as I want, in order to cover expenses while my savings grows untouched until such time as I no longer want to work at all. It's a nice stepped-down (up?) approach to retirement.