How do you not know that gladiator fights used slaves?
You're right, gladiators were categorically slaves - however there were people that freely chose to become gladiators ( and therefore "willingly", or at least were not forced by threat of torture/death, became slaves). I agree with you, I was trying to make the point that it ( and the NFL, to your point) are bad even if people have a choice in participating.
How do you not know that gladiator fights used slaves?
Also, we already have the modern "free market" equivalent of gladiator fights, it's called the NFL.
You're right, gladiators were categorically slaves - however there were people that freely chose to become gladiators ( and therefore "willingly", or at least were not forced by threat of torture/death, became slaves). I agree with you, I was trying to make the point that it ( and the NFL, to your point) are bad even if people have a choice in participating.