Gaming? Stick with Windows.
Pure work? Mac of course.
Why? Mac don't simply update the OS weekly and it is very secure. No malware can run without permission. If it does, easy to kill it.
Windows on the hand need to update weekly and when it does, it will take time and very slow. Occasionally, the update might fail and u start over.
Best to have both platforms. U can opt for an older 2013 MBP and some older 4th generation with discreet GPU for gaming.
Myself went for this route. Gaming on a Dell Latitude E6540 and work on a 2012 MacBook Pro. Both upgraded to the max with lots of RAM and SSDs. And both also connected to the same 27 inch monitor via a HDMI KVM.
I don't want a huge desktop because always on the move.
mostly work. the only game i play on laptop is football manager.
but i think you saying about older 2013 mbp maybe good option for me to test out the ecosystem.