These dudes been playing football since they were 10. I'm pretty sure they know you can get injuries from playing. I don't care how invincible they think they are. If they don't know that then there's something wrong with them.
Same with NFL players.
People like you who seemingly have never played the sport nor knows anyone who plays the sport shouldnt comment on these things. They dont know how dangerous football can be to their LONGTERM health. It isnt mentioned AT ALL. ANd the pressures from your fam, friends, coaches, teammates to play and practice through anything is IMMENSE. I remember one time during football practice in high school, I complained having a headache during these one tackling drills. I stood to the side to just regather myself and I had coached and teammates just looking at me like I was a bytch or something, then one of the captains finally said something to me and he gave me the

my head hurt too, coerced me to reenter the drills (nothing was wrong with me thankfully).
Nobody that age knows there's longeterm detriments to what they're doing. And for some ppl football is their only out.