I cannot see how that is different than someone throwing a stone at another person just because they do not agree with them. You don't think there is any difference between throwing a rock at someone and reducing their overall vote count by one vote in an electronic voting system? If someone downvotes me, I have a reason to look again at what I posted and whether or not it fit the discussion. If someone throws a rock…
Of course, I then go on to contribute to the pool of negativity by downvoting people without responding to them, so it's not like I'm blaming everybody who's ever downvoted. But I do understand where he's coming from.