Having not used any MS software for years outside of work and occasional troubleshooting for friends, this just doesn't seem like a big deal to me. Familiarity

Having not used any MS software for years outside of work and occasional troubleshooting for friends, this just doesn't seem like a big deal to me. Familiarity breeds contempt, I suppose, but for someone who could even consider doing this (i.e., no vital Windows-only applications, no PC gaming, etc.), I can't imagine it making much of a difference. If my day job didn't involve .NET, I'd never touch MS software and wouldn't really notice. The only practical difference to me is remembering whether to type "ls" or "dir" and that installing/upgrading software on Ubuntu is easier and requires less rebooting. Okay, on second though, this is sounding like I'm bashing him, which is absolutely not the case. His previous 30-day challenges involved substantial lifestyle adjustments, with non-trivial time commitments and the whole 30-day challenge concept is awesome. It's just that compared to previous challenges, "use Ubuntu" seems not very ambitious. Is it just that I've gotten unusually lucky in my experiences with Ubuntu or something?