Marriage is a business contract, for the purpose of raising kids. You must not let your feelings get involved. You must be ruthlessly logical, primarily to protect your kids, and secondarily to protect yourself. Accept that you may fail though, and be prepared for divorce if necessary.
If feelings are what you're looking for, then you're looking for a girlfriend, at most. Best not to convert a girlfriend of this type into a wife though - the basis of marriage should be logic, not feelings.