What makes a marriage last? Especially with two very different personalities?

My Husband and I have been together for 6 years we are very much still in love with a 3year old son. Things are typically great around my house we talk we support each other, but when we have disagreements about anything it gets really out of hand. My husband expects me to never have a problem about anything. I tell him that we don’t always have to see eye to eye and that it is healthly for us to disagree. He on the other hand does not believe that and it sometimes leads into a big blown out arguement sometimes about the stupidest things sometimes I just don’t know what to do. If we can’t just talk things out I always ask myself self how will we make it to forever.