Flashing the Nokia N900 on a 32bit Windows 7 computer is easy. I too have a 32bit Windows 7 and have flashed my Nokia N900 often. Have you followed instructions?
Not sure what Nikon scanners, DOS games and Windows Vista have to do with the N900, but if you think the N900 is dead in the water, then you have clearly not used it properly. How long have you had yours?
If you perhaps mean that your old PC is better than the N900 because it can still play 15 year old games, then try loading up a DOS emulator and load all those old DOS games, or why not go one step further and load a PS2 emulator or an Atari emulator or Nintendo emulator. I bet your crappy old DOS PC cannot run those!
If you used the N900 properly, you would realize that Nokia do not need to support this device. The Maemo community are doing an excellent job in that department. What exactly are you after from Nokia? In the entire time I have had my Nokia N900 (16 months) I have asked Nokia for support ZERO times. The internet is my support. This forum and my common sense is my support. What apps are you using that have not been updated? Have you got notifications turned on? There is not a day that goes by that I do not have a new update for software (e.g. today Opera Mobile 11 updated today).
Do you know any developers that have dropped the N900? When last did you visit the download area on this forum? Have you browsed your Application Manager recently? Have you visited the many Maemo websites out there and seen how much software is available for the N900? Developers have NOT dropped the N900 at all. They are building awesome applications for this device. If you download as much as I do there is no way in hell you could make such a statement! As for blaming Nokia for your incompetence, shame on you!