I know Theo and others are opposed to it, but I still would like to see it on the Raspberry Pi. Kind of a missed opportunity to make it easy for lots of people to give OpenBSD a try.
Things have only started to change recently when BroadCom released some documentation: https://libv.livejournal.com/26434.html
There is some support for OpenBSD on ARM, for hardware that is more open than the Raspberry Pi: http://www.openbsd.org/armv7.html
http://www.openbsd.org/lyrics.html#39
And I agree with it entirely :)