I just started using it in the past month or so. I doubt I'll ever go back to any other distro. I tried it once in the past but gave up because I didn't have the time to actually learn it. Now that I have it's amazing. I like having control over not only what packages get installed (ala Arch) but also what is contained in those packages.
It's been a lot of fun learning and renewed my love for computing.
Edit: been using Linux for about 20 years now. Started with Ubuntu