My wife's laptop is on Linux Mint. It had two appealing aspects: It's virus/malware resistant and free.
It's been working great.
My PC is a windows machine, for one very good reason: I game. Linux gaming is currently a lost cause. Installing drivers for 3d cards is a damned nightmare. In fact, that's Linux's biggest failing: Driver support and installation. My daughter's PC is likewise a Windows machine for two reasons: The first is that's what she uses at school, so it's right in line with her experience there and the second is that like me, she's a gamer.