There's support, and then there's that support being so flawless that its the same quality of experience you would get with a standard aspect ratio. Each of us has our own standard of what's good enough. Its working out for you but the people I game with that were using ultra-wide monitors switched back due to the number of issues they were having, as recently as last year. I did some research myself when I was upgrading my monitor and some of the games I played would have had issues so or me personally it wasn't good enough.
Another thing to consider is a lot of game content is designed with standard aspect ratios in mind, so whether expanding the viewpoint makes it better is going to be a personal standard. It will be interesting to see if UW monitors do become a standard in a couple of decades whether game developers start specifically making content that utilizes the extra space to offer something that isn't possible with existing games.