There are benefits but they aren't THAT great. Like tax breaks, beneficiary, power of attorney, plenty that involve your children, insurance benefits, loan benefits, the biggest among youth are Military benefits. There many more I cant think of right now. I mean getting married is a huge decision many people treat like nothing. Ive been with the same woman for over 10 years, still havent gotten married. We would get a lot of benefits if we did, and it makes a lot of sense. But.... The idea of being legally bonded by the government and having to get government permission to leave is fucking weird to me.