The Atmosphere Has Changed !

It may sound like sour grapes...but this is the way I see it...time was I enjoyed making up packets of worldwide stamps (my duplicates) there was a group of us who knew each other pretty well and it was fun..then for some reason the atmosphere seemed to change..people would ask for a packet and I would say ok...and for some reason half of them would not even acknowledge they received the stamps ! What does it take if you have a deal with someone to send an e mail and say ..got the stamps..thanks...that would have made all the difference...it aint fun no more !!