OS X really isn't optimized for touch at present. It's designed to be a desktop/laptop OS, not a mobile device OS.
Neither is win vista, but I and the kids still use it that way.
Windows Vista wasbuiltwith touch screensin mind.For example, youcan changedifferenttouch optionsin the Control Panel. ;)
Mac OS X isdesignedfor non-touch devices.I thinkit'snot evenpossibleto programspecifically fortouch.