I have clients with both VMWare and MS Hyper-V. I use Oracle VBox for setting up appliances, linux test machines, etc...
The company I work for is a National IT chain that was purchased a few years back by a multi-National company. So the work I do now is for client coast-to-coast. Keeps things from getting stale.
We used VBox for Ubuntu Java developer boxes. I didn’t like working from home (you are always in the office) but I did like the work. I was working part-time when I went back, which is required by the state, but I was 8-5 5 days a week. When I began the retirement process, I lost 30 lbs immediately. When I went back PT, I started gaining weight.
My new job is to spend money while getting rid of stuff. I worked for a university so I have a retiree parking pass and access to the library. I’m still on the Slack channel so I get to hear all of the work talk and can offer info if needed. The students leave next week so I can go to campus and get books.