[alar44]

> It might be because they have a mood disorder, or chronic fatigue, or social anxiety, etc etc.

This is a babies excuse. If you're an adult, you should be actively dealing with this. However, it has become fashionable to wear a psychological condition on your sleeve. People who use this as an excuse have likely never been diagnosed and probably aren't even trying to deal with it. Either way, those are their battles, and if it means they are flaky, we just won't be friends. I've done the hard work to get myself out of a social anxiety disorder and can easily tell who actually has similar issues and those who are just lazy flakes.