I agree with you but HN does not. HN specifically says downvoting for disagreeing is a valid and even encouraged used of downvoting on HN. I've been informed of this by Dang when complaining about downvoting before.

https://news.ycombinator.com/item?id=16131314

I wish I could downvote downvoting

well, yes, i used to think like that too, but i changed my mind. even when i received downvotes. they don't say much, but they did tell me that there are people who disagree with me. it is a weak signal, but it is a signal, and so it's not useless nor unreasonable.

personally, i only downvote if i feel someone says something unreasonable or worse. but not if it is a good argument, even one that i disagree with. in those cases i even counterupvote other downvotes.

as for the downvote on my comment, that was more a rethorical question. i was actually just laughing at that, given the subject of the message. and the subsequent upvotes show that a lot of people agree with the comment.

(edit: it gets funnier. by now my above comment received at least 8 upvotes and 4 downvotes (or up to 4 people changed their mind))

Why is there voting at all? It's so childish.

Upvoting that.