aircrack is not too good in windows. openvas(vulnerability scanner) doesn't run in windows. Hacking in general is easier in linux. Modifying the splash screen for your bootloader. Dual booting is alot easier with grub than with the windows bootloader. grub2 usually autodetects windows and if it doesn't, you usually just need the os-prober package. Installing software is easier and usually safer on linux. In windows you also can't just uninstall you're entire desktop without touching the underlying operating system and install a completely different desktop environment or none at all. You also can't build your own windows distribution from scratch. The fact that you can do that alone should give you an idea of how limitless linux can be.

That and the fact that most third party software on windows by default tries to sneak and install extra crap without your knowledge. You usually have to go with custom/advanced options to stop that crap. Everybody wants to set your home page and install toolbars when you never asked for any of that stuff.