encyclo - 11:18 pm on Jun 24, 2010 (gmt 0)

Define "porn". You can't, because your definition is relative to your culture and level of tolerance.

It would make parental controls so much easier.

No it wouldn't - because providers won't use .xxx - it is nothing more than another money-printing scheme by ICANN. Why would a website voluntarily move to a TLD which would be viciously blocked at many levels?

I hope the next step is forcing porn to these extensions.

The word you are looking for is "censorship", and assuming that the promoters are not totally naive, web censorship is probably an ultimate aim (along with the usual protection scheme of ripping off of trademark holders by pushing defensive registrations). Censorship is a battle far more important than porn.