Does Marriage Work?

Obviously I am biased in my opinion as I am now married, and I think marriage can be successful. I see my parents 36 almost 37 years in, and they are still in love with each other. I also know the reality, 50% of all marriages end in divorce. Marriage can be hard sometimes. I can understand why people would want to cohabitate. I can understand why people don't want to cohabitate. I know for my parents, the concept of me living with my husband before marriage was an issue due to their religious beliefs. They referred to that period in my life as "living in sin". Yes I know all about Corinthians 7:8-9 and 6:18-20. Hebrews 13:4. We all know my stance on religion too, so you know that it has no bearing on my life. It did however on my parents. I know also as a person who is married I receive benefits that those who are not married do not, which is why I am all for same sex marriage. I know many gay and lesbian couples who have a very strong relationship, probably stronger than some straight couples I know.

So is marriage outdated? Does it work? Even with all the stats of marriage out there, why do people still want to get married?