You may not like Windows (note: none of my computer equipment, phones, or work machines run Windows), but it normalized a pretty significant set of operating system features ranging from preemptive multitasking to pluggable filesystems to a workable fast userspace mutex. Windows also maintained a *wildly* long history of binary compatibility well beyond virtually any other OS out there.
They did some next level shit.
I was an Amiga user, a Mac user, a Linux junkie, etc. To call Windows "playing with a toy" is to demonstrate an utter lack of awareness of the depth of that operating system and its facilities.
Of course, I'd rather use Linux or mac OS (and there were others, like NeXTSTEP, along the way), but let's give credit where it's due.