I Agree, because not every human is perfect and they will never always make the correct choices. Everybody has already done something bad to someone and they could have been hurt, not physical but also emotional. For example if you call someone a bad thing or you swear at them you would find it fun but the other person might be hurt by it. Another great example is bullying, because the bully will find it fun and the victim won’t the victim will be hurt, no mather if it is verbal or physical bullying.
So I will come to the conclusion that I agree that it is fun to do bad things even if people might be hurt in the process because it is naturaly human to do bad things and not always be perfect.