I used to have Gentoo, specially when I was a student. It was definitely an interesting experience, and the skills I learnt are useful in many other contexts.

But when I started working, I switched to Debian, maintaining a Gentoo was a bit costly, and when I wanted to try out something, compiling everything was really slow (you frequently have to wait a few hours).

I still use a minimal setup (dwm with some customization and helper scripts: https://github.com/kakwa/dwm-desktop), and frankly, once it's done, you barely have to touch it, I've not touched my setup in years.