I'm a guy and I have never really used any kind of cream other than soap and shampoo.

I know that if I don't shower, I will stink really bad, and possible have bacteria on me and little bugs crawling in my hair which could result in illness. Also, I know that brushing teeth is a must, otherwise my teeth will fall out and rot away.

Is body cream, especially face cream necessary? What happens if I don't use them? Will my skin die? Will I get sick eventually?