And if what you say is true, then why is it that people generally seem to prefer having sex with a real person who looks like Angelina Jolie than with a real person who looks like Golda Meir or Grandma Moses?

Obviously, outer appearances do count with most people. A large part of sex is fantasy, based on outer appearance. This is why I think your Rudolf the Red-Nosed Reindeer idea just won't fly! ;-D I offer as evidence the fact that Howard Stern has not yet fucked any inflatable Rudolfs or Frosty(s) the Snowman.