Of course not. Take love for example. For the people you love, people can give unconditionally without asking for anything in return-many people will answer that. But is this really the case? At first glance, this is true, but people have feelings. If you add feelings to the category of interests, it will be very different.
Helping a friend is to get the feelings of a friend, paying for a lover is to get the feelings of a lover, and of course helping a lover is also to get the feelings of a lover. Everything has a reason and is driven by interests. Imagine if a friend is like a frozen snake, the loved one has a family, and the relatives have long abandoned you and stopped looking at you (that is, you can't get their feelings), will you still pay for them? Obviously, no one wants to do this. No one wants to be bitten by a snake, waste his youth and ignore heartless people.
It is not difficult to see that people are animals, and there is not much difference. If you insist that there is a difference, it is only a little emotional difference.
Feelings are not direct interests, but in my opinion, feelings and interests are not unrelated. Strive for the feelings of friends in order to help you in the future, strive for the feelings of lovers in order to get him (her), and strive for the feelings of relatives in order to get the care of relatives. Therefore, feelings are like passbooks, which store long-term interests. Of course, it may also be a bad check.
By extension, between people, between people and animals, between people and everything? People raise pigs for eating, horses for riding, cats for rats and dogs for playing. Dress for color, plant flowers, water trees for wood, paint ceramic blue and white for money, and spice vegetables for taste.
It's all for profit, no matter how far or near.
"Milk is a mother", a very vulgar old saying, but he tells the true face of people. However, people often deceive themselves because they are human beings, which leads to the inability to see the essence of human beings. In fact, how big is the difference between humans and animals? Only one smart person can see the long-term benefits, and one can't.