The intent of your original statement was clear, but the discussion seemed to drift towards whether using the additional safety gear is a good idea, rather than the psychology of using it. I agree with you that if you start the day saying I "should not" go out there without an airbag, then you probably shouldn't go out there at all. I believe that being safe in the backcountry requires using all of you senses, including intuition. In my experience often times a decision not to cross or ski a certain slope is based on feelings or thoughts that are hard to quantify or define, and wearing a head bag would undoubtedly cloud that decision a little more.
Undoubtedly your best piece of safety equipment is your head, and I think it is hard for an Avalung or head bag not to mess with that, but that does not mean that wearing them is a bad idea. MF
I really don't get the reasoning that an air bag or other safety equipment is going to make you more reckless or put your brain in a safe deposit box. For whatever reason, there is anti-airbag sentiment and people come up with whatever rationalizations they can find to justify it. The same false logic is used in the anti-helmet diatribes. Some people just don't like airbags (or helmets).