There is committing despite problems, and committing despite Problems. Problems tend to be too much of a pre-existing strain when serious shit happens in a marriage... and serious shit always happens in a marriage, that's kind of the point.

And some things are problems for some people and Problems for others. Everyone has to be on the same page as to what is important to them and what they are willing to work for... and if you can't communicate before getting married, it's sure as shit not going to magically just happen afterwards. There is no telegraph service install as part of signing the marriage certificate.