Humans love being the cause
So much of our human motivation is because we take "pleasure at the being the cause". This starts very early in live, when we are babies and notice, that we can topple a wooden tower to fall over, or that if we push the button at an elevator, the elevator will come.
But also as adults we enjoy games, throwing stones into the water or other impactful processes or hobbies. According to German psychologist Karl Groos this gives us meaning and essentially making us exist.
David Graeber sees this is as a reason for people leaving jobs, which lack this fundamental psychological need.
"We wish to exercise our powers as an end in themselves."
(David Graeber)
When we loose this feeling of being the cause (e.g. at work or in a relationship) we tend to grow tired, frustrated or resentful. We feel powerless and useless and even though we might earn good money from Bullshit Jobs (work which often lacks a real impact or effect) or being in a relationship with a beautiful woman but without the feeling of being the cause of any change, we tend to want to break out of those engagements sooner or later–because we loose this sense of being the cause for change and therefore seizing to exists.