I always upvote people who reply to me. Even if they disagree with something I wrote. For me, the upvote work as "I have read your reply and thanks for taking

I always upvote people who reply to me. Even if they disagree with something I wrote. For me, the upvote work as "I have read your reply and thanks for taking the time to write it." Then I'll continue the conversation if there is any more to be said.