Only time I've seen people use the quick chat emotes it's in Cyrodiil when people meet up at front door Sieges or resource flags and we start Hello-ing each other.

I always do. It's particularly good for RPers, who will be better able to know when someone nearby is actually talking.

No
that what the chat box/discord or another screen is for!

I have them on, but I don't do group activities or RP or any of the typical reasons people have them on. I just sometimes communicate with players in the overland, and even when I don't, it's useful when there's a conversation to see who said the thing without having to check the individual usernames. I have to point the reticle at PCs and NPCs to see their names, so if someone's saying something in the immediate area, chat bubbles help.

I have various addons to clean up the clutter from the UI so my screen only has a couple of small things on it, so it's no trouble to put the bubbles on.

No, I'm from FFXIV and before that FFXI. The text chat and emote functions (at least on PS4) were one of the hardest things to get used to because they're such a basic component and bubbles would be even more different.

No, I despise clutter. Visual and otherwise.

Never really noticed the option, then again I main a tank so I don't like clutter on my screen, will have a look, if it gets in the way I won't bother with it. Would not know if anyone is using it though had no reason to look for it.

I mainly just use chat, may not always respond to a hello though, I will generally answer a question if asked other than that the most you will get out of me in a dungeon is: Chest, hs(heavy sack) and looking for X set piece/monster helm will tip.

If there are some low level players in the group in a dungeon that you can skip quest bosses on I will ask if anyone is doing the quest, so they don't miss out on the bosses they need.

I do explain mechanics when asked, sometimes I can't remember them until were in the boss fight, so I will see how the group goes if we wipe I explain and we go again.

If I get a weapon drop at the end that I know to be rare and have no intention of using I will ask if anyone wants it at the end, for example given away 4 of those Inferno staffs everyone is after in city of ash not the best traits but they were happy.

I turned them on long ago after discovering them in the UI settings. I don't use chat too heavily, but the default choice is /say which means players sometimes /say things [EDIT: when I think they'd meant to use /zone] and I'm not sure if they're talking to me or to someone else, so I look around to see if I see a chat bubble.

I also turn on subtitles for the NPCs, but not the additional option that makes the NPCs' speech show up in the chat box. That option can be useful, because I believe it even shows NPC speeches that don't show up in the subtitles, but it's too confusing to have NPC speech intermixed with player chat.

I never use them, but as far as I know everything shows up in my chat panel so I'll still see if anyone talks. But I prefer minimal stuff popping up on screen so I'm more likely to notice the stuff which is important.

I was just about to say no, but realized, yes, I do have them on for just about everything but /zone. I guess I just don't come across a lot of people speaking locally.

I tried playing with them on but it was too much clutter on my screen so I turned them off.

/zone chat has been pretty rank of late. I mean, ranker than usual. It seems to happen every so often, then it gets better for a while-- maybe because the most offensive players get themselves banned, or get bored and move on, or whatever. I'm too old to be offended by dirty talk, but it's embarrassing to see players who think that juvenile dirty talk is funny.