Yea, that's the 30%. Most of what I use has had 64 bit versions for several years.
I don't use Acrobat or JAVA. Replace Acrobat with PDF Xchange viewer or something similar. Much less vulnerable, a lot more secure. Java is just a malware magnet.
I don't really use IE that much. The 64 bit browser was a bit buggy so I never used it. I think they keep the browsers on 32 bit because of plug in compatibility. Anyway, we've hijakced the thread enough now...
Getting back to the OP, many 32 bit apps run fine on Windows 64 bit. I don't know what they are doing with Windows 9, but 8 is available as 32 bit if you really need it.