In reference to pugsie's http://pugslie.blogspot.com/2011/01/universal-problem-me-thinks.html... because we cannot not expect. We are all selfish. We cannot be happy unless we have our demands met. If, for instance, there was a person that we gave everything to..out of our own happiness and that person happily kept taking it..u know somewhere inside..probably a tiny tiny tiny fraction of our mind/heart will Want that person to do something in reciprocation appreciating what we have done. I mean, however callous it may sound, we even expect God to listen to our prayers so how can we not have those expectations from men/women. Now, you’ve either got to be a super human or have a person in your life who fulfills your expectations(out of his own will but Also because you are doing the exact same thing) whatever name you give it..and say that we don’t expect anything from each other when you do and you have those met. There are no selfless good deeds as Joey states. A feeling of gratitude or a big gift(preferably:D)..anything..but we need something. :)

Hum neki kar dariya main daal hi nahi sakte..its humanly impossible. We can do good, show it to people and remember it for future references. But here's hoping that we'll improve:)