Video chats and screen sharing are better (Screenhero is all that was around on Slack and it stunk). Video recordings save right to OneDrive for important meetings...
Oh and if you use Office 365 it’s a no brainer, everything is integrated!
It is imposed on people whose organizations have Office 365 subscriptions, it is not chosen.
The bugs do need mentioned though. It constantly crashes for me, constantly loses sync, will just straight-up freeze for no discernible reason, will decide it doesn't really feel like actually sending my messages, and so on. It does not at all feel like a mature product.
Our team dropped HipChat and has moved to Teams along with the rest of the org. Our dev team (of 7) had used HipChat as a simple persistent chat app, sandboxed away from the rest of the company. Now we are on Teams with not only Ops guys, but also HR, marketing, and so on. It's fine at being sort of an organizational tool, but we dearly miss having our own private chat-only app that we can make use of as we want/need. Partly this is contextual to our organization, but the way we use Teams now feels far more formalized, and not in a good way.