Why are you so interested in FI if you have no interests outside of work?
If I went back in time and was in your position, I'd definitely pull back on work and try and acquire more of a "life". Friends, lovers, other interests, all of that stuff. Imagining going through ~10 years of life without those things makes me very sad, definitely not worth a few years of FI. I guess also what I'm trying to say is FI is much more meaningful, desirable, and exciting because i have those things.