Why all religions are similar in nature (love)?

Answer 1

Catholics believe the desire for God is written in the human heart, because each person is created by God and for God; and God never ceases to draw each person to himself.

Created in the image of the one God and equally endowed with rational souls, all men have the same nature and the same origin. Redeemed by the sacrifice of Christ, all are called to participate in the same divine beatitude: all therefore enjoy an equal dignity.

With all this in common between every other human being in the world, how could any religion be all that different in nature?

With love in Christ.