We all do things like that and I agree "idiotic"is probably too strong a word for many of them. I used that for my title only I suppose and think some of the things we do are simply par for the course for a human. Although, There's a lot of idiots out there.
Thanks for commenting and your input...and yep, arrogance and/or superiority ar contributing factors when it comes to whether a person onboards new skills/knowledge/understanding. A shame so many people inhibit their lives in that way.