Isn't it normal for people to buy products in an attempt to make their lives suck less? Unless you're a Puritan, ascetic, or pharmacological Calvinist, I feel drugs should be bought and sold like any other consumer product that carries a risk to the consumer.

Agnostic, it's not just the puberty that causes hair, skin, and nipples to darken—the hormonal changes associated with pregnancy may affect a woman's hair follicles as well.

People are born with a blank slate and all of life is little more that the acquisition of stimulus-response patterns? Skinner died in the 1990s, and strict adherence to this view died long before 
 
I think you're confusing classical conditioning with operant conditioning. Skinner never claimed that genes do not affect behaviour.

I don't think David B and Peter understand the handicap principle.