Not quite slackware but I use Gentoo and have since I was 14 or so. In later years, I never was really continued to use it for leet reasons, it was merely being used to it and it being familiar. I tried to use Ubuntu for a few years but I just got tired of how it would behave when things broke. while gentoo required more time to get to work, I always knew how to fix things.

It's okay, the good thing about Linux, at least for non-production systems, is you have choice. I imagine for some of those who use slackware, it's similar. It's not for leet points or whatever, it's just what they are comfortable with.