I need someone to hold me...pretty please

Days like today I have to wonder what some people are thinking when they have a child. The Kid I am a nanny for started crying uncontrollably during his nap, all he needed was for me to hold him and love him. He doesn't know that I didn't sleep at all last night because I didn't feel good or that I had just been crying because today is one of those days where I would like someone to hold me. He doesn't have a choice he can't talk yet, all he can do is cry. So what in the world are people doing leaving their kid in his or her crib crying hystarically while they finish there text or dvr'd program?? Why are only stupid people breeding?