I couple of years ago my brother decided he wasn't going to get back into fly fishing and gave me all of his old material including his prized grade 1 Orvis grazzly neck with only a few hackles gone. That neck was one of the best you could buy thirty-five years ago. The feathers are short and the barbules are not nearly as stiff as newer necks and it has fewer barbules per inch of feather. I'm still tying dry flies with it but I'm reminded that back then it was standard to use two or three hackles for each fly even if you liked them sparsely hackled. The area where today's hackle falls down is that it is very difficult to find hackle for larger flies. I find myself looking over the Indian necks in the fly shop for hackling hex flies and maybe an occasional varient.
I can think of few acts more selfish than refusing a vaccination.