Cheap airbrushes are a nightmare—and I don't mean just the inexpensive ones.I do not want to complicate a relaxing hobby with complex mechanical devises and more toxic chemicals than I already deal with and I don't have the luxury of my house with a basement any more. To be to the point this is my relaxing hobby, the airbrush just stressed the crap outta me. It turned my hobby into a nightmare.
Rattle cans are likely to expose you to more noxious chemicals than an airbrush—if you chose the right paints.
HOWEVER: Your point is well taken: life is stressful enough without a stressful part of an otherwise relaxing hobby; and you do good work with rattle cans. If that's what it takes to increase happiness and reduce stress, go with it.