Sometimes I like several answer the best I don't want to favor anyone, or give a casual viewer the impression that I have stamped my seal of approval on only one "correct" answer.
I am aware there is a badge for getting awarded many "Best Answers" but I don't feel like I am cheating anyone out of anything if I deem that no answer is "the best." I want to be fair, not play accolade games. The accolades do not really mean anything anyway, they are just frills to keep some people more engaged on HubPages. I would strive to provide a good answer even if there were not badges for it, I assume most people would too.
The main benefit in answering questions is to gain more exposure. I hope that someone reading my measured response thinks "Hey, that Bubba-Math is an all-right guy, I think I'll read some of his hubs!"