It's going to be impossible to keep users if we keep hopping. Slack, then rocketchat, now discord.
I don't like voice chat personally, plus I don't always have privacy where it would be appropriate. Sorry to see so many people leaving steemit.chat which was perfectly serviceable. But congrats I guess.
I'm honestly not that big a fan of rocketchat. It definitely serves its purpose, but it leaves a bit to be desired. I suppose people will have their favorites for a while, but eventually I think people will settle for where most people can be found. In this case, I believe it was the features the new platform offered that ended up being the deciding factor to make the move.
No one stated you had to voice chat, plenty of text chat options; which is Discords main focus.