People that don’t upvote/downvote a post/comment to which they respond, why?

People that don't upvote/downvote a post/comment to which they respond, why?

We all see the post with lots of comments that are only +2 or even negative (many of which not deserving the down votes). Lots of decent quality posts/comments get downvoted to oblivion.

Do you really think that the upvote has any effect on your moon totals for the month? Wouldn't the upvote help the post/comment gain visibility so that others can see your comment(s) and upvote them?

Are you just being lazy?