Because they are selfish old curmudgeons. Greatest thing about youth weekends is being able to take multiple kids hunting where there's normally not room. My kids hunted all they wanted while growing up, but of youth days we could take a few of their friends too. Some of them hunted before, and some never had. Some now hunt as adults and some don't, but they all have a positive view of the sport. I always tried to get a parent to go on those hunts because that's where the whole youth thing hits a wall. If there's not significant support from a parent, the kid will have a tough time sticking with it.