So this is how it all started. Back in the day women were not allowed to work. Legally they were completely dependent on a man. At first a woman was dependent on dad. But dad couldn't live forever so marriage was born as a way to care for women. It was literally a contract where a caring father saw a way to get a man to care for his daughter -- FOR LIFE. Which was the point. In exchange the guy got a guaranteed person to have sex with for life. Often father's paid *bribes* or dowries to tempt a good husband. There was no divorce because that would have ruined the entire deal for the father who needed to care for his daughter. That is why marriage had to be "for life" because it was a contract for the care of a woman for life.

Religion only got into it later on but marriage was primarily a legal contract.
This legal and religious contract was still in full effect until as recently as the early 1900s. But now, now that women can work and take care of themselves society has tried -- in vein - to keep this arrangement in effect. But, it just isn't working. A life time coupledom (gay or straight) is good for society. There is so much that society gains from people living together. They get to pay less wages because 2 people can live more economically than one. Health care gets to pawn care off on spouses or wives, imagine if they had to care for people after surgery when now they just require you bring someone to take care of you.

I only hope more people like you start wondering what the heck the point is.