ok, I have a laptop... I hate using a mouse. Anyone have experience using touch screens? Is it better than a mouse?
It really depends on what you typically do with your computer.
Touch screens have a couple of major disadvantages:
1) They are much less accurate than a mouse, since there is a larger point of contact to 'confuse' the sensors
2) Ever touched your normal screen by accident? Fingers leave grease behind, and a touchscreen ends up looking very messy real quick
3) Ever seen one of those touch screen cash registers? It doesn't take long before frequently pressed areas get affected by it and start to scratch, turn less transparent, or even rub completely through. Nothing but a thin layer of plastic between the outside world and your display crystals, after all.
4) If you use them a lot, they'll be significantly less ergonomic than a input mechanisms -- you'll have to have your entire arm suspended in the air after all, putting much more strain on your shoulder muscles.
All in all touch screens are great for areas where a keyboard/mouse is impractical (e.g. in-car navigation systems, law enforcement in-car computers, factory floors, cash registers, vending machines, etc.) but they would make a poor interface for normal every day use on a laptop I think...
A big issue is that all these other settings use very specialistic custom software that is typically designed with touch screens in mind. You have a fairly limited number of possible actions you can take, which tend to be clustered behind fairly large on-screen buttons.
A general-purpose laptop used to run office applications is a very different setting indeed. not limited to big buttons = more accuracy issues, and you also tend to have a higher resolution... so more visual data, which will be more severely impacted by a greased-up display.
The real question, is why you hate the mouse -- is it the lack of a convenient surface when you put it on your lap? There are other alternatives, such as a built-in touchpad in your laptop, or even a 3D presentation mouse which is made to be used anywhere in 3D space. You can just hold it in your lap and control your cursor with it, for example. They have some build-in gyroscope thing that helps measure motions. E.g.
http://www.extremetech.com/article2/0,3973,1128548,00.asp