what you wrote sounds completely insane to me. sure i don’t use a mouse on my phone very much, but no way would i ever prefer a trackpad to a mouse for a desktop or laptop. and tons of people still carry a mouse to use with their laptops, based on my observations. i really think you may be an outlier here.
not very much. honestly, only once or twice, for a laugh, which is probably still more than most folks lol