I mean when blood sports and combat sports exist, are extremely popular, and haven't died out or been banned despite getting punched or kicked in the head to the point of losing consciousness being a key part of these sports, I don't see how contact sports like American Football or Rugby will be banned or die out. I do think more needs to be done to make contact sports safer though. I like the changes rugby made with regards to cards for high tackles and the scrum, it makes the sport look safer than when by friends played it in high school.