The truth is, that all the aircraft designers will have to buy it, to keep up with the latest developments, and when you see their latest offerings, and find that they wont display correctly in fs9, (as happened in fs8) you'll go running down to peasy world to buy it. It's a fact of life.
They build faster PC's, to run faster sim's, so we put more in the sim to slow it back down agin.
I suspect that the honourable Mr Anderson is correct in his analysis. I kept with FS02 for longer than most on here, but eventually I couldnt use planes being produced by the likes of Rick and DM, so I had to migrate to 04
I keep FS02 installed too. I have a few older planes for it (including a half finished Concorde I was building myself ) but mainly because its quick and easy to test my scenery in (since I have all the VFR installed on FS04!).