When someone helps another it causes a bigger affect on the world then they may have thought. The last fact is that when you perform an act of kindness it wears off on others. For example, if you pay for ones lunch the recipient may want to pay for another's lunch like a ripple affect.
In conclusion helping someone is not only beneficial to the recipient it is also beneficial and even health for the giver. It is easy and free to help someone so there is no negative side of kindness. Next time when you see someone in need take action and it may result in benefiting you and the recipient.