I hold the door for ANYONE...male female or unknown -- young or old it really doesn't matter to me..

As the great Betty Freidan said...when a man apologized to her for holding the door..."I would have done the same thing for you if I had gotten there first."

I hold the door for people because it is the polite thing to do...not for the thank you.

(And yes...I am effusive if a young person holds the door for me and thank anyone who does.)