For example I have a few iPad apps installed on my Mac, the reason being that I wanted keyboard/mouse and easier copying of content into and out of the iPad app while I was working on my desktop machine. With universal control I don't need to have the dual installs anymore, nor have to deal with the problems that would come with that (e.g. having to duplicate content across both installs).
There's also plenty of apps which the developer has barred from installing on macOS where this is the only real solution.
For example I have a few iPad apps installed on my Mac, the reason being that I wanted keyboard/mouse and easier copying of content into and out of the iPad app while I was working on my desktop machine. With universal control I don't need to have the dual installs anymore, nor have to deal with the problems that would come with that (e.g. having to duplicate content across both installs).
There's also plenty of apps which the developer has barred from installing on macOS where this is the only real solution.