ah... happiness.
these days, it's very hard to give happiness to others.
give them a Wii, an nDS, a car... sure, they'd be happy... maybe for a few days, weeks tops.
or worse, give people a gift for their birthday or christmas, they'll just give you that smile, say 'thanks', then after unwrapping it and telling you how much they like it, the present probably won't get another look.

on the other hand, after visiting a pair of proud new parents, the looks on their faces exudes nothing but happiness. When they hold their new born child, they wear smiles happier than recieving any new expensive toy.
but why is that?
having a baby is recieving... but recieving a lifetime of debt.
everything that happens after a child is born requires giving, giving money, time, love, care, nuturing... etc etc.
yet, happiness abounds.

so, maybe happiness is not in recieving
happiness is in giving.