I understand the pain. People have tough choices to make, and the exorbitant price for the PT HD 9 to PT HD 10 upgrade is not helping.
On the other hand, in order to go to 64-bit, Avid have to leave behind the HD dsp hardware (which won't run under a 64-bit app) and both TDM and RTAS which can only run in a 32-bit environment. So the move is actually overdue and I don't think it's in anyone's interest for them to stay with 32-bit and be left behind while the rest of the world moves ahead.
Like it or not, we're in a transition period, which sucks from a $$ POV, but will bring some plusses. And on the brighter side, Avid has confirmed ongoing support for TDM systems for up to another five years, and no doubt many of the current systems will still be working long after that. So, not all bad.