>custom fonts shouldn't be used for body copy?

No.

>Shouldn't technology be bending to our will? Not our will to technology?

It has nothing to do with technology, it is about user experience. Pushing a crappy font on me because you think it is pretty does two things. It makes you feel good about yourself, and makes it harder for me to read your site. This is the same narcissistic designer syndrome that gave use flash intros back in the day.