Agreed. For example, I have a 2002 Dell with XP running a Shimadzu high performance liquid chromatography system. The Shimadzu HPLC requires Windoze and a 32 pin serial connector. I didn't want to buy a new computer so I just used my old Dell. To make it run faster, I don't have anti-virus software running. To avoid getting viruses, I don't connect it to a network. I know others that have a similar setup.
By the way, if anyone is interested in writing OSX compatible control software for an HPLC system, let me know. It won't be hard to make improvements. The Shimadzu software was obviously written using 1990's technology. Shimadzu thinks we should appreciate the fact that the software is in color.