I personally didn't (yet) root my phone, I'm perfectly fine with ability to disable apps I don't use.
But as alexdon said, average user can more lose than gain with phone rooting, especially if phone is in warranty time.
If you plan to use custom ROMs, customize some phone features or just wants to totally remove bloatware apps, then rooting is your only option and your are then probably already aware of warranty issues.
If you just wan't to disable some apps you don't use, then try simply to disable them, before you try to root your phone. Maybe that would be just enough for you without tampering your phone.
If not.. well you now the drill :smileysmileywink:
Good luck.
