why do women get paid less?

[LuGoJ]

Employers have to take into consideration that females may and in most cases do get pregnant at least once in their life. They are going to expect time off for maternity stay. Also, employers realize that after childbirth, there is a big chance the woman may not even return to work. It's a liability thing- men are more valuable to them. Not saying I agree nor am I saying I disagree with this practice.

I could definitely see a "no child or plans for a child" clause appearing in employment contracts some day.