Right now I have freedom of communication. In your vision I would hand all that over to my ISP for the benefit of giving complete control over who can communicate with me to them. Perhaps you could explain to me just how you currently manage to get port 25 packets delivered to your friends without transitting your ISP? Or did you just mean "freedom of communication" in a rhetorical sense?
Because it's not hitting the disks in their mail spool, nor are the sender and receiver checked against any policy databases.
And if you will trust an ISP to deliver port 25 packets then why wouldn't you trust them to deliver email messages?
Because the packets are an order of magnitude easier to do than e-mail, and the orders only keep rising when the number of subscriber rises. IP service is ubiquitous, your proposal would make an important service running on top of it not anymore. -- Niels. -- The idle mind is the devil's playground