He, he Fuzzy, you are right of course.
Right now there is no real reason to install a 64bit OS.
The reason I did it anyway is that if you buy OEM, you don't get both versions as in the retail Version. Since I bought a new computer and only really can afford to buy the OEM version, I had to decide:
Stick with 32bit > have less problems at the beginning > but have to buy a new OS, if I ever want to run 64bit Software, or not being able to run that software at all. (And 64bit software will come out the next few years)
or
Jump onto the 64bit version > have more problems intially (so far my ony problem has been with DeskScape) > but don't have to buy an expensive retail version or another OEM version later.
Since I expect this computer to last for another 3-4 years, the second option seemed the better one for me.
I have to say though that I am surprised how well everything (except DeskScape) works on my 64bit system. I initially planned on making a double boot-system together with WinXP Professional (32bit) for exactly the anticipated compatibility issues, but I realise now that this is not really necessary as Vista 64bit has been running everything I have put on it so far (inklusive my games, and even those that upon install scream: "known compatiblity issue"), and XP won't run DeskScape anyways..... so I might use my second hard-drive to play around with Ubuntu again instead.