Not gonna get into this discussion here, but I just think banning jack3d is stupid, so many other things are worse for you and they're still allowed.
To take the argument to the extreme, if obesity is as much of a problem as it is - I don't see why they just don't ban foods with high fat content or force everyone to exercise - we're that much of a nanny state.
I reckon, the truth is, there are always those who will use stuff as jack3d in a way that is appropriate, and the truth is, most people who choose to use it will use it appropriately. It's just like most of us drink alcohol (cough, Mao, cough), but surely we're not chronic abusers, similarly, most of us would eat foods with high fat content every now and then, yet we are not obese, just like how we have been to Crown or place bets on sports, but are not chronic and problem gamblers....(except for taiga that is - he's a problem gambler except he wins)
In my eyes, most of the time, most people act appropriately and care for their health, it always seems to be that there are always a few stupid ones who ruin it for everyone else.