Compatibility is the most important thing, common interests, common values & even if people don't agree, common religious beliefs are important maybe not at the moment but over the long run.

My mom really liked the guy I was dating & was thinking about getting married to. She said he's NICE. Only problem was the more I got to know him there were personality issues that came up as RED FLAGS to me....I allowed mom's opinion to override my red flags then I rationalized MY red flags away & went through with the marriage. BIG MISTAKE!!!!

The POINT here, though my example is the opposite of yours....It is important for YOU to hold onto your own feelings about the relationship & how YOU FEEL ABOUT HIM. Don't let mom convince you of something that isn't YOUR OWN FEELINGS or you will regret it in the long run