We would surely save on gas and probably our progress would have taken a different direction. BUT if I would be given wings now, I'd fly away from my job in a heartbeat and take a flight around the world lol.
Wings would be wasted on this obese nation, no one could get off the ground. Those who did manage to leave the ground would leave skid marks everytime they landed. Buffalo wings probably wouldn't be near as popular at bars as they currently are. Masterbation would also lose it's popularity as all those feathers would tickle way too much. Federal regulations regarding flight would have exploded with the patiot act and free flight would be a thing of the past.
I used to fly a lot in my dreams. It was so natural. I just used my hands as wings. It is a sensational feeling. I wish we really could fly. May be we could in our distant past, who knows? May be we will when we master the gravitation.