Think of it as a long-term investment. Like not polluting.
A Condescending Question Mark will help you feel smug for a moment, but as everyone contributes and feels smug, it degrades the forum, and you lose out on the benefits of a forum where people actually like each other.
This place is different. It's loose and rude, but it seems like people mostly like each other (deep down, maybe?). But you can also see that it's pretty much impossible to have a serious conversation here.