If training to be an A&P is what you like and it isn't expensive, then go for it. It won't hurt you and it will help you to know more about airplanes. Down the road, when you call in an MEL and the maint. guy gives you some 'tude, you can set him straight. I just think hitching your back up plan to aviation, is putting too many eggs in one basket. If the economy is bad for the pilots, it will be bad for all of aviation as well. But, hey, at least you have a back up plan and are well informed!