Everyone is for himself. Perhaps in our vast sea of people, people are selfish advanced animals, and the feelings between people are sometimes so indifferent. Affection is nothing, sometimes the same flesh and blood can eat each other, let alone affection. It can be said that his cousin has a chance to go to college, and you said he did it for himself. At that time, he didn't consider his cousin, and she also wanted to go to a good school and have a good future. It can be said that the mood at that time was worthless in his eyes, and nothing could compare with her. It is very important to have a good future, and family ties may be so worthless.
What I want to say is that maybe we don't care, but sometimes we can't lose ourselves, and sometimes we still have to take care of our family and can't do such bottomless things.