My average karma is very low, I've noticed that I rarely hesitate to post something, regardless of the thread size. I think this is because I benefit sometimes

My average karma is very low, I've noticed that I rarely hesitate to post something, regardless of the thread size. I think this is because I benefit sometimes from other late-thread low-karma posts and want to reciprocate. Much has already been said about the current state of HN and karma, but one thing I'd like to add is this: comments that provoke discussion (i.e. comments that are responded to) should perhaps be valued higher than ones that do not. Excluding those that are downvoted and responded to because of that, obviously.