If you go to prison and you still have the same basic human rights and privileges of society, then it isn't a prison. The whole point of prison is to punish people who did nothing but disrupt others, which is done by restricting freedoms that we take for granted as citizens. If you give prisoners more freedoms, IMO then they might aswell be not in prison, but at a holiday resort that wastes tax money.
EDIT: Prison is so comfy to some people that they deliberately commit crimes in order to have better living conditions.