Would you still go through with the divorce even if the other person isn't financially stable?

So my brother is divorcing his wife after about 13 years, but it basically created a situation where the wife didn't have her money together to live on her own and care for the kids. She had no problem at all letting the world know that she hated him and that he wasn’t a good husband. Her family is very filled with drama and everyone grew tired of it. When she knew divorce was coming, she started acting nice and trying to be a good wife. She stated that the main reason she hasn't filed is that she isn't financially stable or has enough savings to live alone. She relied heavily on his salary while still working. He is in the military and also does other things. The only thing he gets is a woman who despises him and swears she'll never marry again. She was acting single and saying nasty things about him, and now she is acting married again. This happened after reality sat in that this is about to be completely over. She trying to stay in the marriage because of his stability

Would you still go through with the divorce even if the other person isn't financially stable?
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