It depends on what you want to do going forward.
If you really want to learn Linux either Gentoo or Linux-From-Scratch is the way to go. If you're just looking to run a browser or a media player, then you'd probably be happier with some other distro.
The other distros are getting better and better at hiding Linux from their users so you can just click on buttons and make things go. Don't get me wrong, that's great. It's just that it will considerably lengthen the learning curve if and when you ever decide you want to go deeper.
I don't think there's ever been a better time to get into Gentoo. There were times years ago when I questioned my own sanity by continuing to use it because truth be told there was a fair amount of pain. But I think today that mostly appears to have passed. The tools and maybe more importantly the processes have matured to the point where it's very rare today to see me yelling at portage.
And we're entering perhaps an era where having this kind of familiarity with your OS will be of enormous advantage going forward, and you're not going to enjoy that with an Ubuntu or a Fedora.




