I am a collector/user and like others have aquired almost all of my retro computers from Craigslist, PC recyclers or Thrift stores. Only a few have I bought for a lot of $ off eBay etc. (Atari Falcon030 is one, as well as a A1200). I really like to mess with them and most replicate models are for parts and spares as I am sure most will be dying off soon. I definanetly dont want to recycle or throw them away so I just keep them. I actually have like 5 A2000's that I got for free over the years and I plan on selling a few on CL if I can, shipping them is not a good idea due to the high chance of them getting damaged! So to answer your question it comes down to nostalgia, hobby and sentimental value for me.