Give up e-mel account?

I want to padam my YouTube account because I feel that I'm not selamat, peti deposit keselamatan anymore. But I figured that I also had to padam my:
Web History
Google Talk
and GMAIL?!

Okay, I will defineatly give up my YouTube account, but I JUST CAN'T padam MY GMAIL!!

So.. WHAT DO I DO?!