Please tell us why you would collect old versions--can you cite a situation where a new release broke a prior feature for you?
There is no reason, it's just like collecting stamps.
Stamps analog is a bad example to start with or use in comparison.
I don't see how you have the time or hobby to keep up with outdated software programs
With two computers, I spend approximately 15 to 20 hours a week keeping up with the LATEST software programs and keeping all the drives and registry's humming and fast and free of problems and junk and hackers and virus and approximately 35% runs automatically.:doh: