I'll have to go with the keyboard. I grew up in DOS and also with slackware 3.3 (shell only) and learned to like it. Also in more modern OS's like XP/Vista, keyboard shortcuts are a wonder and a huge help. Time saving is another reason.
this was the reason i made this post many of them said to that i made it for spam but thing is i have seen many people only working with keyboard they does not attach mouse n vice versa
i cant pick any one ,i depend on both,as it is very irritating to use keyboard for mouse functions,scroll,..etc and we cant use mouse for typing (except in screen keyboard)