Getting ready for a (Wo)man

How come when a guy "gets ready" to head out, all he has to do is:

- shave
- take a shower (regular shampoo)
- deodorant
- put on clean clothes
- combs hair
- walks out of door

When a woman "gets ready" to head out, she feels [society tells her?] she has to:

- take a shower: this is not your average-Joe-regular shower. This is a tedious process involving various shavers, exfoliants, body scrubs, loofahs, pumice stones, invigorating body washes, rainforest-smelling shower gels, and unique volumizing/moisturizing/therapeutic shampoos corresponding with their complex conditioners
- post-shower phase: body lotions, foot lotions, and hand lotion, each of which should smell more exotic than the last one
- blow-dry hair ensuring no 'frizziness'; style hair using another complex set of different hair brushes and combs to give maximum style, 'lift' and volume, as well as using gels, hairsprays, and pins to keep it all in place for the rest of the day
- deodorant and perfume
- apply expensive face moisturizer as the first of many steps towards applying makeup. When in makeup stage, don't forget to apply: matching skintone concealers (liquid? powder? cream?), matching skintone foundations (liquid? powder? cream?), eyebrow pencil, mascara, eyeliner, eyelash curler, eyelash comb, eyeshadows (powder or cream?), brow eyeshadows, lipstick, lipliner and corresponding lip gloss, powder finish (to ensure no greasy spots), blush, blush brush
- must wear matching shoes and purse

Why don't guys have to go through all of the above rigmarole? Why can a guy go out looking like crap, and a woman has to look perfect each and every time?