I think it's more about protecting ourselves. I believe people have the capacity to change but I weigh that against the FACT that there will be people who don't

I think it's more about protecting ourselves. I believe people have the capacity to change but I weigh that against the FACT that there will be people who don't. 20 cheaters (of which 19 would have changed their ways) not getting to compete is preferable to the damage that 1 cheater would inflict.