slightly OT: ipv6 -> direct connected

I was reading an article the other day about ipv6 trying to bone
up on what going on, and was wondering over the following;

The author makes statement that with ipv6 we will have enough ip's
for everyone to be directly connected to the inet. Stating that
masquarading is a "neccessary evil" and will no longer
be neccessary.

I am wondering what impact this will have on the security
of PC's attached to the network at that point. I can just
see folks just throwing boxes up thinking there will be no
need for a firewall any longer.

would anyone like to comment on this?

v/r
Mike