I like to help people get where they want to go. It's almost a compulsion, and it's kind of weird, because I VERY much keep to myself and am notorious for scarcely making eye contact(!!)
When I drove, I'd get turned around, lost and melt down in the confusion. It's almost like I don't want others to feel that horrible spinning disorientation. Also, I am (secretly) inordinately proud of having this hard-won knowledge. Special emphasis on transit. I just freakin' love helping people use it!