I haven't read the whole thread, so apologies if this question's been asked before, but upping the age to 70 begs the question: what will we do when the last baby boomer actually drops his clogs and departs this mortal coil?
The constant increasing of the retirement age "because we can't do without the experience" could have been used by every generation since before Pontious got his command in Air Judea. I really think we oldies should accept that we've had a damn fine time of it (and quite possibly, almost certainly, have seen the best of it) and we should pass the baton on at some stage. There's no right or wrong age for this, but 65 would seem to me to be a pretty good compromise for all concerned.