Lots of those memberships are probably corporate with a few selected company officials who entertain guests and write the whole thing off !
"At home a friend will ask, “Been bird hunting?” You will say that you have, and when he asks,” Have any luck?” You will think of what you have held in your heart instead of your hand, and then answer that you certainly did—without a doubt." - Gene Hill
Take a gander at the amount they give to charity. You will notice it's likely more than they will ever collect in membership fees.