Man can show more love than plants.
Many say for fun sometimes even seriously that plants are better option than human being. "It would have been better to plant a tree than gave birth to children."
Plants can give fruits without fail. But it can give only the same fruit according to its potency not more than that.
But a human being can give more than its normal. It has reasoning and can give something that I never deserve.
It can change decisions not only to negative but also to positive. To our surprise we receive what we don't deserve.