That's the biggest problem with a stylus. They get lost, and if you don't have another, your phone becomes a brick. Second biggest problem is that the stylus picks up grit and ends up scratching the screen.
If you had even bothered to research the thing you're bashing you'd know none of that is an issue with the Note. 1. It has a feature that plays a sound if you walk away with it without the stylus inserted. 2. It's just as useable as any other phone even without the stylus. Also, I personally never had a problem with the stylus scratching the screen.