Everyone knows relationships are hard work. Everyone knows that relationships hit roadblocks and whatever the fuck else. Fucking why. What’s the point? Be with a person that you mostly tolerate most of the days that you exist? And even then, they still might betray you in a horrible way. I’ve dealt with a lot of pain and stress and loss in my life, and when the happy shit gets sour, I just don’t fucking get it. Why not just live my life fucking off and dying eventually.
Life is mostly shit, but with moments of happiness. Sharing it with someone adds more shit to both of you, but also more moments of happiness.
Though the ratio differs from person to person, overall there is a net gain of happiness having someone to share your life with.