I've been thinking about this for awhile now, and I think I've come to a conclusion. I think they exist to take you out and buy you things. They're so desperate for female affection and something to stick their dick in. Social gender constructs are useful because they expect women to be flaky and emotionally unstable, and most of them are so used to rejection that when their hopes are shattered they accept that it's their fault for not being good enough.
Men are like puppies to play fetch with until you get bored.