Quite so. The problem I have is “legacy material”. I’m also running old photo-editing, old video-editing and old web-software, much of which cannot be upgraded cheaply. I do own Parallels, but some of the legacy software uses MacOs graphics support which Parallels (and other virtual machines) cannot support, so it’s a bit of a halfway house solution. But yes, I have High Sierra sitting in a virtual machine in case my computer explodes! I also have a dual boot Mac. I think I’ve covered most bases, but it feels like I’m sitting on a thin branch and sawing furiously!
As regards audio latency in a virtual machine, well, not a problem - actually I need to run Cubase on my legacy (score) files to generate MusicXML so I can import to Dorico. And because I’m trying to run a business and create new material there’s not really time to convert everything that I might (or might not) need.
I realise that I’ve painted myself into a corner, but actually my Cubase is 7.5 years old, and that’s not as long as I’d hope a car or a microwave oven to last
I did caution people by saying people would laugh when they read my post, and I do thank you for a considered reply. I don’t think my problem is specific to Dorico - it applies to anyone who uses a computer to generate material that they want to preserve and re-visit.
Unless there’s a simple explanation as to what changed in the elicenser to make it break with Cubase and not Dorico, I will carry on till there’s no paint and no corner left!