I'm getting less and less "gotta be the real thing" as I get older. Emulators are great - a wide variety of people can get the experience with much less frustration. It's possible to do even the formerly"special" stuff such as SGIs now that computers have crazy amounts of processing power in even low-end models, and more people can be exposed to alternative ways of doing things on the software side, anyway. I decided that while messing around on my VAX - sure, the DIGITAL storage interface systems are technically sweet, but it's frustrating to have to find all the little, very proprietary bits to get it working especially if you don't have experience with it. SIMH gives someone a dose of VMS much quicker, and without the "cross fingers and pray I don't get any smoke now that I've finally found this at a price I can afford" worry.
What would be really nice would be to have a full PowerPC Mac emulator, now that 10.6 is getting very old and the PPC hardware is getting old... I still have PPC/SysX and PPC/classic apps that I use.
I'm also deciding that there are many days when I don't want to juggle boxes to run stuff. Emulation and virtual machines require much less lifting, bending, and cord fiddling.