I seems like you are telling me the more items you have to search the same speed it goes.
If you really have that solution please post it here.
Solution to what? That the more data you have the longer it takes to search it? Same goes for ENV: etc. If you could solve that problem then oracle and sybase would not have a business.
Windows is more complex than AmigaOS because it allows you to do more. If you're happy with AmigaOS for everything then use that. I stopped around ten years ago because it was the right time for me to move over to Windows XP. Windows 95 was similarish in terms of stability and ease of use to AmigaOS, but it didn't warrant me to spend out that much money.
I don't want to diss AmigaOS but it has more flaws than recent versions of Windows, even if some of the concepts are nice & haven't made it onto any other operating system.
FWIW I was using my a500 last night, but retro games and demos are like classic cars. Nice to own and run at the weekend, but not an every day thing.