I talked someone into eating a bug once in 3rd grade.. thats about the closest..
Same here, I am happy to tell someone how much I love my airbrushes, and the ups and dows of gravity vs siphon feed etc.. but depending on their situation like available cash versus what they want it for there's a lot of brushes out there that will do the job...
besides when they can't figure out how to use it 2 weeks from now I dont want them coming back to me because they dont like it..