<human>: Can you succinctly summarize the text in 1-3 sentences?

I make approximately 70k and she makes 45k. We agreed that she would work when we had a child and that we would send her/him to daycare. My wife (7 months pregnant) recently decided that she was going to stay at home because she doesn't make enough for it to be worth it to not stay at home.

I disagreed, but I understand how bad she wanted to stay home. My wife also has significantly more savings than me. Yes, it's technically "ours," but we have a billing account and each of us have savings. She has a lot more saved, much of it from before we got married.

I told her that I support her staying at home, but that she would need to dig into her savings for the next year since she wouldn't be working. Not only did she disagree with me, but she was outright offended. She (for some reason) didn't understand why she would be expected to use her savings.

My thoughts are simple. She decided on her own that she would be staying at home. I supported her decision, but that certainly doesn't mean we are going to live off of just my salary. 

What are your thoughts? Why would she not think by making a decision to stay at home that she wouldn't have to use some of her savings to make up for the difference?
<bot>: Wife decided she will be SAHM but is offended that I suggested she would have to dig into her savings. Why would somebody think that's unreasonable?