What's the point

What's the point of dating, getting married or etc.? It's bullshit because there is this inevitable goodbye. People leave. Or even if they stay you eventually have to say goodbye. What's the fucking point? To be happy? That's bullshit! I much rather be alone forever than get attached to a person to only say goodbye down the line. I just don't see a point in this. I'm 21, never dated and never will. I hate getting attached to anyone because they always leave. There is no point when there is an inevitable goodbye waiting to be said.