I'm just in it for the chicks
Actually, I'm one of the lucky ones. My dad was a modeler so I grew up with it. I was about 7 or 8 before I realized that not everyone had planes in their basements!
The way I see it, some guys like trains, some guys like trucks, we like airplanes. So there's really no explaination for it. Just as some men prefer blonds over brunettes, or boats over cars.
We even have differences amongst ourselves: Some guys like 3D, while others prefer sailplanes, or Peanut Scale, or Helicopters