Am I an asshole for not being helpful?

[Herr Mullen]

It all comes down to that old adage.

"Give a man a fish, he is fed for a day.
Teach a man to fish, he is fed for a lifetime."

"Give a man a fire, he is warm for a day. Set a man on fire, and he is warm for the rest of his life." Terry Pratchett.

There are plenty of people in life who will get on your nerves. The trick is to smile, be friendly, give them answers, and toss in several veiled insults they won't detect or understand so you can laugh later on. People have no problems with people who appear to be on their side.