I have never liked messing around with my carefully curated windows in Windows 10. Like many things in my life, I have spent time getting them just the way I want them and have thus foregone the convenience of working with side-side windows because of the pain of resizing everything when I am done. (Sorry to those who have to put up with my particular ways.)
Then, I was playing around with some Windows system settings the other day and found this automatic way to work with side-by-side windows without changing the default window sizes. It is quick and painless, so I thought I would pass it on.