Dear LGW V,
I appreciate your reply and wanted to add I'm aware that not everyone does this, but the bad ones always give the good ones a bit of a bad name, you know that.
On the second point, I understand your concern and am a pilot myself, so don't think I am just a photographer walking in here making a lot of noise without knowing both sides.
I don't hang out at the fences of the airports for hours every day like spotters with bino's and cameras, but normally get asked to specifically shoot this or that.
Regarding others not having the permission of the aircraft owner to take photos... if a photographer is on public land (i.e. not on the ramp of a FBO), he is free to take photos without permission.
Think of you driving down Times Square with a Ferrari. Nobody needs permission from you to take a photo of your car there. Just saying.
Again I appreciate your input.