Fat, awkward, heavy, latency issues, etc. Why would I play on a tiny screen when I don't have to? Why would I want a controller in the first place when I don't need one for 99.9% of games? How soon will it be incompatible with newer Nvidia stuff? Probably inside a week to force people in the upgrade cycle. No thanks!
“There is no such thing as a weird human being. It’s just that some people require more understanding than others.” - Tom Robbins