You can enjoy a beer all night long. Beer stains wash out. You don't have to wine and dine beer. A beer will wait in the car while you go and play football. When your beer goes flat, you toss it out.
Beer is never late.
A beer doesn't get jealous when you grab another beer. Hangovers go away. Beer labels come off without a fight. When you go to a bar, you can always pick up a beer. Beer never has a headache.