When the Messaging app first came out, I installed it. But I also hated how intrusive the app is. I uninstalled it and switched to just using the web interface.

Unfortunately, typing messages in the web interface on Android is absurdly awful. There is a bug such that the last message you sent remains in the text field invisibly and only shows up when you continue typing. So every time I sent a new message, I had to first hold backspace for ~10 seconds to delete the previous message and clean up the textarea. I got so frustrated doing this I switched back to the Messaging app a week ago.