I had gotten a used laptop with Win10Pro, and I only use Windows for work. I’ve always wanted to try Fedora, so I took this opportunity (I grabbed the Win10Pro key off of it beforehand, of course), and I’m very glad I did. Gentoo will be next, I think.
Vanilla looks very interesting! It looks like a very real prospect that I may be able to recommend to new users. Ubuntu’s Unity has caused several people to whom I’ve recommend it, to revert back to Windows. Maybe Vanilla will keep them on Linux. I actually stopped recommending Ubuntu because of Unity, and started recommending Mint to Windows users or Budgie to Mac users. I know it’s somewhat configurable, but the side app bar of Unity and the Windows 8 style app menu were among some of the reasons they disliked Ubuntu. They said that it felt “ancient”.