I shower because it is a fresh start to my day. the only time I Will not is when I have no time. I am beginning not to shower to go to work because I hate where I work but when I'm going out with friends or somewhere I like, I'll shower.
Showers cleanse your pores, as well as free up the hair on your scalp from all the pressing and oil that built up in your sleep.
I noticed that if my hair was at a different angle while resting on a pillow, I could not sleep at all and I would have to wet it again just to fix it. That strains the scalp in such a subtle way that your whole body is irate and restless. Just my theory.