Experiencing emotions is a very human thing. Expressing emotions is an important part of a social activity, such as a forum. I believe a forum should allow expressing a variety of emotions, from positive to negative, like here:
Speaking as someone who is part of a community that has went through a lot of drama recently... I really think these bring more trouble than they are worth. They seem innocuous at first glance, but people really seem to (ab)use them in ways that drive conversations in directions that aren't very productive.
A lot of damage has been done to the world by people who put too much value in internet points. It’s not healthy.
I might even support something in the opposite direction - hide the names and the number of likes, and people just highlight responses they think are interesting without any implied endorsement.
FWIW… this forum does not allow memes. And that includes wholesome memes. In order to not allow dark and unkind memes… the decision was made to not allow all of them.
I don't think it's completely fair to assume that if mods had the option to add reaccs they would only choose "happy" or "positive" reaccs.
The primary mission of these forums is to foster productive and insightful technical discussion. The problem with something like a "crying face" reaction is not that expressing a negative reaction is forbidden here; it's that, if you're having a negative reaction, we want you to explain what you're thinking so that other people can understand it, which is what allows us to have that productive and insightful technical discussion.
I'm actually not sure we have the technical ability to remove the reaction from Discourse, but I wouldn't want to anyway. I think it's a nice way of showing that you appreciate somebody's post without distracting from the conversation. But I'm quite comfortable with saying that that's the only kind of reaction you should be able to express without using your words.
I think reactions also serve a useful purpose for acknowledging a reply without sending a full-on reply notification to the recipient and obligating them to click through to read a response. But that only needs one reaction bit and not a palette of different reactions.
I've definitely used reactions to mean at least two different things on the forum:
I agree with what was said in this post and I want to have the discussion reflect that, but I have nothing more substantial to add in a reply.
I appreciate what this post adds to the discussion, regardless of whether or not I fully agree with it (in some cases, I may not).
While I can see why someone would want to distinguish between those or among other subtleties, I don't think it's necessary or all that valuable because discussions on the forum don't use count as a critical factor in making decisions. They may be used as a rough measure of general sentiment for something, but there are no situations (that I'm aware of, at least) where someone says "a lot of people really liked this comment, so the decision on X is now swayed from this to that."