Which do you enjoy more: receiving or giving?

I enjoy giving more than receiving.  I like to think of people and their delight when receiving a gift as I am picking out their gifts.  I feel that sometimes, when receiving a gift, I may seem unappreciative if I do not "act" happy enough or excited as I am opening the present.  I guess I think there is more pressure to receiving because you want the person that has given you the gift to believe that you truly love the gift.