I just want to let others know that I agree with what they said and/or that I like what they said without having to go through the hassle of having to think what reply comment would be best or most appropriate, or, if such a comment that I agree with and/or like is old, without having to go through the awkwardness of replying to such an old comment.
It's fine to agree with what people said, but adding confirmation points would result in this site becoming just as cancerous as every other site that uses them. It's a literal disease at this point, and there are people addicted to getting those upvotes. It would be nice to have a report option for the occasional wacko extremist, though, instead of waiting for the mods to notice it.