Why do so many people Grenade Launch on Modern Warfare Wii?

I'm sorry but if you do...You probably have no skill. I don't think it's bad to use them every now and then. But when you rely on them more than your actual gun to get kills you probably suck. Grenade launchers or "noob tubers" are the most hated players on MWR. If you do it...You should stop. It could actually make a difference....More than half of all people who play use them online and it's just getting old. Teach yourself to snipe,or get actual gun kills.......Do you ever get sick of noob tubers?