I spent $1699+17" Studio Display in 2001 so I would be able to keep the same computer without having to upgrade. Contrast that to friends who bought iMacs who have had to upgrade every 2 or 3 years to keep doing basic things, which also get more processor intensive as the years go on.
$2800 and 8 years of heavy use vs $1500 every 2-3? The iMac user spends $4500, I'm $1700 ahead of him because I bought the more expensive machine up front.
Did I need the full power of the G4 then? No. Do I need it now to keep up with minimum spec? Yes.
Yes, but the iMac user can sell his old iMac every 2-3 years for at least half of its original price... so he spends $2250 and is $550 ahead of you AND has a faster machine.
Sorry dude, I just had to. Of course you have less hassle keeping one machine longer and not buying/selling rather often. But it's not like your way is oh so great and iMac buyers have no idea what they are doing. Your way is great for you and that's fine, but there is a reason there are different models of computers, to each their own.