GOOD post. Sums up what I was thinking too. Since in this medium we don't have the kind of emotional ques we would normally get as a response in group conversations, upvotes serve that purpose. It is unfortunate that upvotes are so... quantifiable in a way that nods and grunts of approval are not, which really exacerbates any problematic obsession someone might have with getting positive responses. But that does not mean we should scrap the whole method we have for providing that kind of light social approval that is necessary to some extent to have real communal (as opposed to one on one) discussions.

I also think that what you said touches on something that seems to often get forgotten in discussions about the validity of upvotes: They're not just fir the person receiving them. Upvoting someone gives me a sense that I am participating even if I don't want to say anything. I very often feel like I have nothing really worth adding since much smarter people here say it better than I could, but upvoting others I agree with gives me, as a shy lurker, a way to feel like I'm genuinely part of the community too. People talk about the dopamine hit they get when they see they got upvoted. Well I get a dopamine hit by upvoting others and knowing they got a dopamine hit because of my doing so.