So i was thinking about getting WIndows 7

Get a better computer.

I've never had any problems with my 64-bit version of Windows 7 and programs not working properly.

This. :/
64 bit runs everything 32 bit fine, and 64 bit stuff. The only annoyance is the two Program Files: "Program Files" and "Program Files (x86)", but if that really bugs you, it can be circumvented with a little attention to program installations.

64 Bit lets you run more RAM. Most new computers have at least 4 GB; Hell, my mom and sister's laptops both have 4 GB.

Windows 7 is also safer. It's virus protection and so forth out performs XP. It's cleaner looking. The only downside is it uses a lot more RAM than XP and takes more space. If you have a GB of RAM, running 7 will push your system. I think Wind7 is 20 GB? Not sure what XP is.