I've had moments where I genuinely felt like ADHD has benefited me, like when went into hyperfocus mode and launched some new project I would have never started otherwise. I feel like I'm a bit more creative and enthusiastic at times. But 99% of the time ADHD is just a condition that sucks for me.
At approximately 11 or 12 years I started with SUSE Linux 10.0 on KDE. Got it from a DVD included in a computer magazine. Felt truly great, although I fully made the switch only 10 years later. Also in 2005, I fiddled around with Knoppix.
Convenience probably.