Any relationship needs the balance between giving and taking. People stop appreciate you if you only give without taking. People will hate you if you always take, never give.
To givers: You should give smart, instead of giving hard, which means do not give without bottom line. Always give to the same kind, so you will never be used.
To takers: Nothing in this life time will be granted. Everything has a price to pay. Someone pays earlier and someone pays later. The price will have to be paid!