gentoo is less about compiling from source (I mean it can be about that too)
and more about having a lot of choice and really nice tooling.
it's in some ways a bunch more stable and declarative than arch.
packaging your own stuff is even easier and you can just have most packages be stable while only running unstable version of the packages you explicitly care about :)
it's a lot less scuffed in some ways while still giving you a lot of control and a lot of tools for declarative system management.
it's also waaay better documented.
it's comfy.
I've become a rust hater because of this