Yeah, at some point you have to be exposed to it. I never was. I'm not even sure when I became aware/interested, it was sometime in the last year. I haven't had a discovery flight yet, I need to get out of student loan debt first.
Exposure is key. You need to get the in air experience to become addicted.
That ability to get the experience was essentially eliminated by 9/11.
Prior to 9/11 most small airports had no fences, no gates, almost no restrictions to accessing the field. You could walk up and touch airplanes. Pilots and aircraft owners would talk to you and answer question and you would watch them climb in and fly off and think "I'm going to do that some day." If you were really lucky you would get invited to take a short hop.
Now, you can't get close enough to the airfield to identify most planes.
This next bit is just an unscientific observation of a couple of the airports I fly into.
GBR has no fences, no gates, sits sort of in the middle of nothing, and the flight school there has 6 full time pilots (and is hiring another) and all the planes are fully booked almost all day every day. People drive 2+ hours to take lessons there. Oh and the parking lot usually has people taking pictures, and people ride their bikes and use the picnic tables, and there are a lot of school groups there visiting, taking pictures, even art students.
44N has gates and fences, sits sort of in the middle of nothing. No flight school. The only reason people go there is cheap gas.
DXR looks like a prison, sits in a large city and the flights schools there are all struggling. I used to fly there, and the only time planes were in use was weekends. I could walk in there and take my pick of any of the Cessnas or the Warrior.
N82, no fences. Doing a great business.
Just my humble opinion. Tear down the fences.