Stuff like this makes me genuinely hate the fact I love football and hate even more the fact that I played it.
You shouldn't. Yes it is horrible this happened but these players know the risk. They get paid millions of dollars to play a game that could and probably will injure you at some point in time. Lets be real, the game has improved dramatically.
Back in the 60s and 70s players played with broken arms, ribs, etc. Those players were 10x as tough as today's NFL. Those guys often had to work jobs during the season just to make enough money to get by.
The NFL has done a remarkable job on player safety but there are still huge risk.