I answer questions I find interesting or compelling and I try to give a good answer as much as possible. Sarcasm and joking not withstanding...
i do it to help
No, I don't answer just to rack up a number. So many of the questions are so mindless that answering them would be an insult to what I hope is SOME intelligence I have. But many are truly thought-provoking and answering them might be my contribution to someone else's thinking. I certainly know that others have introduced me to perspectives I hadn't considered.
I answer them cause I wanna answer them LOL
I answer questions, according to what I think when I see the Q. If nothing comes to mind, I don't bother. Best answer is nice, because it feels good to be acknowledged. Racking up numbers is not even in the back of my mind.
ether or both...
It depends on the type of questions. Some are serious and would require appropriate answers. Never is my intention to get the best answer although I have over 100 best answers.