Earlier quoted context omitted.
Oh, how I’ve never wanted downvote power more.
Submit interesting unique links and post more substantive comments (maybe add a paragraph or two your previous comment) and you will be able to downvote soon enough. But I don't understand the appeal, when I do it is usually accidental (really easy to do on a tablet)...
I'll often upvote comments with opinions that are counter to my own, especially if they are presented in a clear, coherent, or novel way that causes me to think a bit.