Taking your tools to a bike for the first time can be intimidating for a variety of reasons. If it's a super new bike, the fear is that you don't want to put that first scratch or mar on it, or inadvertently strip some threads.
That type of fear goes away completely if the bike you're working on is a bit of a basketcase, because you strongly suspect that hey, at least you can't make it worse. And whether you're correct or not, it's how you feel, man. And so, you put a little swagger in your walk as you saunter over to your toolbox and prepare to operate.