I do have as many too at work.

I use one VM for each iteration of my automation software. Our factory has machines ranging from the 90s to present day, and they use different software environments to be programmed. In order to minimize the risk of data loss, we have one virtual machine with every software environment, that way if one gets corrupted, the damage is contained. It also makes them easier to export to new computers when we need to replace ours.

If you turn off your deck being online and then turn it on again somewhere with no internet access, sometimes it will not get past the “looking for updates” screen before loading steam. I’ve had that happen more than enough times. Only way to exit from that loop is connecting to internet, but that’s not always possible.