Why People Do Things?

In life, one should be kind, but not gullible.
There is a Pashto proverb which says:

پيشو د خدای لپاره موږک نه نيسي
“Cats don’t catch mice for the sake of God.”

Many people are selfish, when they do things, there are usually strings attached.
They usually do things for their personal gain.
There is usually a “catch”, so be careful.
Don’t let people take advantage of you.
Very few people do things purely for the sake of God.