|"future hardware is only to be made compatible with the newer OS's"|
Just use usb devices, such as thumb drives.
"Win7 is set up and the way you work on that system"
W7 is super stable, with anything new, just a matter of learning your way around it, just the same for Linux, which at least is FREE.
"Or can I tweak the win7 home to do and look the same?"
Yes, google for it.
I use all my old XP programs on W7-32 bit, some are 10 years old.
"and the ones I'm having is gonna bust some day"
Yes, mine is now 6 years old & with prices so low, I will, once the machine starts to breakdown, CPU or motherboard ( I have spare power supply, memory, monitors, CD roms & hard drives from comps people have thrown out ) get a barebones system.
This system, I customize by taking out stuff I don't want, which gets the price down to A$382.00
Or, this one for A$419.00.
No doubt you have similar deals in your area.