What is wrong with a stay at home mom?

When I come to yahoo answers I know there is a chance I'm going to get answers from rude people. Recently though I was told I needed to get a job, because I was not more specific in my question - my fault though. My question now is why are so many people looking down on stay at home moms? Our situation. Before my husband got his degree and started his career, I worked as a CNA then LPN. After I had our last child, my husband wanted me to stay at home with the kids. We have savings, we have insurance, we pay our taxes, etc. We get no financial help from elsewhere. I was still told I needed a job, incase something happens to my husband. If, something happens to my husband, we have insurance and I have my LPN license I can fall back on. So please tell me what is the big deal. I was told no one in this economy needs to be staying at home. If, we can make it on just my husband's income - what is the big deal? No, I am not bragging about our income - something could happen and my husband could not have a job. We have struggled before, working both min. wage jobs so he could go to school and myself as well. At one point in time we did get help from student grants and loans. Still paying on our debt. I'm just asking what is wrong with a stay at home mom if your family can deal with that. Yes If I have to go to work, I will. I'm not against working. My husband and I just decided it would be better if I stay home until the kids are in school(the youngest is 2 now.) Eventually once she is in school, I'd like to do something part time. I also volunteer at our local food pantry. Am I missing there point?