windows looks quite old and outdated.
Not everyone uses the latest and greatest. Some prefer to use older (but more familiar) desktop environments. At least they have that choice. (Windows doesn't offer any choice of desktop environments).
Multi Screen I presume
Yep, proud owner of triplets.
People are practically giving away old crt screens and low spec PCI graphics cards can often be salvaged from unwanted desktop computers. So you can get Geeky on a budget, the only limiting factor is how much weight the desk will take lol!