You know...in old times I invested a lot of money in FS2002....remember old LAGO EHAM and PHNL (hello Umberto! 
), Simflyers stuff, early GAP series and UK2000 airports when AFCAD and AI traffic were new guys in the town. However, this didn't preclude me to move easily to FS2004 once people realized that it's perfect extension over FS2002 with impoved ATC and many other areas. In other words, don't blame people's habits for the real technical flaws of FSX. Once it will be proven that Flight is stable, reliable, fits modern PC requirements on at least "expensive" level of hardware - I will switch no matter how many thousand of $$$ I have invested up to date into FS2004.
Dmitry, that maybe you personally, but I cant even count how many times I have read posts around the FS world of people who want to switch to FSX for one reason or another, but frankly dont want to spend the money to rebuild their library of addons. I'm not saying that is everyone, I was only mentioning it as a reason for some. You got to remember, some people who are heavly invested in FS9 may never switch to a new sim regardless of its look or performance, just do to the fact that they can't financially do it, or maybe are just happy enough with FS9 that they will use it until the die. Then there are other guys like Ed (edetroit) who post the vids over at Avsim who dont even like wide screen monitors and stick with 4:3. He's so vested in FS9 with all the panels, guages, and whatever else he's custom made for himself, he'll probably never use another sim other that what he's using now.
Of course for some like yourself, FSX didn't make sense to switch to. In your opinon its full of bugs, can't get enought FPS most likely, hate the higher res ground textures, cant run every slider to the right with 60 FPS, probably is pissed that PMDG and ORBX dont support FS9 developement anymore, thinks it looks cartoonish. What else? Of yeah, you probably hate the car and boat traffic that's not scenery specific, hate the moving jetways that are on the stock airports, probably think that 4096 res clouds textures look like crap, etc., etc.
However for all the reasons you didn't want to go to FSX, pretty much all of those reasons are why some of us wanted to go to FSX. Nothing wrong with that, no one is forcing anyone to use a sim they hate :-)
As far as the other comments about "technical flaws of FSX", that arguement is getting about as old as FS9 is itself. If it was really that bad or that flawed I dont thing anyone would be using it at all, much less for their primary or only sim. In fact, I doubt developers would even mess with FSX if it was that unstable or trouble some and their wasn't a market for addons for it.
Anyway Dmitry, lets not turn this into another FS9 vs. FSX debate.
