Useful or otherwise from the perspective of an Individual, even before the first human being appeared, all vegetables, fruits, and the rest of the resources were there; do we call it a waste?

We don't because we were not there?

Even if human beings cease to exist, all this will continue. Is it not just our perspective? Why do we think everything is around us?

Now, I understand, personal interest need not necessarily be selfish!! so, every action has a quid pro quo; the gain is either material or emotional. We dont encourage this angle of looking at the motivation, because we need to increase the number of altruistic agents, and saintliness, and being saintly involves self interest.

Kindly let me know, is this our line of thought?

This definition of altruism is a little lesser altruism, with some selfishness accounted for!!

It is our perspective to see something as useful, beautiful, or otherwise.

A forest is beautiful in the eyes of an animal, or some of our natural humans.

The mass of the world does not change from the time it is created, it is only the perspective that has changed, with Industrial revolution, we have lost the nature and converted it to the so called useful things, and as we all know, energy can neither be created nor be destroyed, it is naturally a zero sum game.