Bit of a generalisation there, I was married after a couple of months. Seems to have lasted so far.
From an emotional point of view, it shows great commitment between two individuals.
intercourse
It's so if one of you dies, the other gets all the stuff. That's pretty much it. It's for legal reasons but of course people will argue otherwise. This is why gay marriage should be allowed.
A will is cheaper if that's your view. Gay wills, now that's a business idea.
share stuff with,
It pretty damned great tbh......
I really need some coffee, I read that as "shave stuff with" and was wondering what kind of bizarre hobbies you share!
A bag for life.
The vast majority of people replying with what marriage gives you are kind of wrong. You could have those things without being married.