I didn't mean I only pay attention good swings. I mean I look at mechanics that produce power and I don't much care what the swing looks like or if it's a "good swing" or a "bad swing". Of course by default it's usually a good swing (but not always).
If it's a "bad swing" with a lot of power I think about what it would take to make it work for better control and consistency.
It may not even be something that is either feasible or desirable for anyone to ever want to copy but I want to know where the power came from.
Not just in golf but in anything. If a guy can swing a 20lb. hammer harder than everybody else on the job site I'm going to watch and try to figure out why, and what in the Hell he's doing that nobody else is doing.
Without power and/or speed I'm pretty much disinterested.