I discovered linux and aix in the late 90s.

Around 2001, I started using redhat at home (dual boot) and then switched to Fedora Core when it was spun off. By 2010, I stopped dual-booting on my main machine and am since using fedora exclusively. We still have a couple of dual-boot laptops at home (with whatever Windows they came preinstalled).

At work I often use centos and solaris. I'm not a SysAdmin, but I do some routine/minor stuff on a couple of servers in my department.