But you still need these mechanisms for the time being. And personally, I do like NAT. I'm not a fan of exposing my internal networks to the internet. Having everything hidden behind a single address is neat.
As has been discussed ad nauseam, getting rid of NAT does not mean all your hosts are exposed. You would still have a firewall, and managing that firewall is much more straightforward when one doesn’t have to deal with address or port translations.
