For a long time I ran Debian in VMware Fusion in fullscreen mode on my iMac. There's a penalty but it's faster than you might think. My interest at the time was an effort to recover some sense of control over data privacy. Gradually I moved bits and pieces into the guest and these days I simply run Debian bare metal on a Lenovo. When my colleague wants to collaborate on a Keynote or Pages document she shares it on iCloud and I do pretty well editing in Firefox.