I have already read all those articles/Q&As you linked me to.
I know you guys would say 64 bit is the same as 32 bit, and even better, but there have been many, many instances of, for example, programs that work or install correctly on a Win7 32 bit, but not on Win7 64 bit. I know that "officially" 64 bit will run the overwhelming majority of 32 bit programs (or whatever) with no issues whatsoever, but I don't think that's the case.
I will be buying a laptop this week, and it comes with either 32 bit or 64 bit. I think that in a 32 bit OS, if you had 4GB RAM, you'll only be able to use 3GB, correct? Well, I'm not sure whether I should get 64 bit (with all its problems) just for 1 extra GB of RAM.
Do you guys have a list of the programs and games that work on 32 bit but not on 64 bit? I've read the page that Corrine linked me to, and call me paranoid, but I don't trust Microsoft. I'm sure "officially" or "in theory" something works, but that may not be the case in real life.