I don't agree with shin at all.
You CAN buy old ass processors for old ass boards at any point. But can you put an i7 into a LGA775 socket? or an i5? or anything? no. Can you put a phenom II X6 into an AM2 socket (which hails from 2006)? Yes.
Point remains. LGA775 lasted a 7 year period. AMD's sockets lasted 2 years at best and not all combinations were compatible (TDP support, BIOS updates, pin conflicts, etc).
Dunno what things are like where you're located but you can still buy high end LGA775 CPU's here.

Core 2 quads aren't 'high end' any more and are easily trounced by, may i add far cheaper to boot, phenom II's

AM2 has lasted for 4 years of high end parts too and will do so until next year, which is almost exactly on pat with the lga775. What you're basically saying is that in 2 years i can claim that am2 has 'lasted' because i can put a phenom II X6 in it.
It's purely false, a socket is only 'current' when brand new products are made for the socket. Being sold =/= current processors. Therefore unless an i3/i5/i7 is on an lga775 mobo, it is
not a current socket. It'd be the same if the phenom II's weren't on AM2. AM2 stops being current, along with AM2+ and AM3 next year when AM3+ releases and the processors don't work in the older sockets.
LGA lasted 5 years, not 7, as a socket suitable for brand new CPU's. Which is standard fare. However this whole palava of 3 sockets in 3 years from intel, coupled with no overclocking at all makes me wonder how anyone can stand to buy intel products and support what they are going to do.
Thank god that bulldozer looks like it'll blast intel out of the water. They need it.