My friends and I have been debating over this and I thought of getting the perpective of guys. If a guy marries a single mom (either widow or had children outside wedlock***), does that mean that the guy will provide for the step children as well?

***Single Mom has zero contact with the father of the step children

Reason why I asked is because my married friend told me that if she gets widowed early she will remarry so that someone coud provide for her and her children. I totally disagree because I don't believe in remarrying. It's just that I don't see men exclusively as providers. If I do get widowed early (hopefully not) then I'd have to raise my children on my own.