system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Marriage doesn't make much sense in the modern world (modern western standards) and I don't see the need to get married.

People don't need legal paperwork to enforce a union anymore, now marriage is (or should ideally according to modern western standards) based on a mutual decision to stay together. There are benefits such as tax cuts, custody rights for children of course, but these are outweighed IMO by the disadvantages when things don't work out, such as divorce fees, wealth splitting enforced by courts. If the argument is about commitment, several other large gestures such as having a child together or buying a property are probably bigger commitments than signing a symbolic piece of paper. Again in the past when marriages were more about securing alliances or people controlling each other marriage was more important but now legal contracts should have little to do with love. Of course I am assuming modern western standards are the most enlightened in allowing freedom and that freedom is an important thing to have over social stability which could be enforced by forced marriage / social pressure and legal penalties for adultery that exist in other cultures.
gpt
Marriage provides legal protections if one partner plans to take time away from a career to raise children. 

Marriage is legally recognized and can gain access to things like spousal visas for non citizens. 

When you make an irreversible decision, your brain feels better about it than a reversible one because it will retroactively find reasons  to justify your decision as correct. By going for an irreversible relationship, your brain will feel better about it and create more justifications.