I'll add: 5. Some people are more bothered by little glitches. This is me. I get irrationally furious when, oh, KDE decides one day to consume all available s

I'll add: 5. Some people are more bothered by little glitches. This is me. I get irrationally furious when, oh, KDE decides one day to consume all available system memory and then hang and I have to ssh into my own laptop to reboot it. (It's an otherwise reliable, not heavily customized system, so not so much an example of #4.) Meanwhile I see people walking around all the time with totally busted smartphone screens like it's no big deal. They just don't seem to mind very much if email stops working for a while or they have to reboot a computer or whatever.