[...] there is arguably negative consequences. If something has no positive side, and quite possibly a negative side, then it is only rational to get rid of it.
First that you believe something has no positive side doesn't make it so. My belief for instance is that taking measures like the one you propose has no positive sides and quite possibly negative ones.
Besides your logic could be used to argue to get rid of gambling for which there's quite clearly a very big negative side and some would argue no positive side.