I also recommend keeping windows around just in case ( assuming you can spare the space). However on the other side of it, if its gone you have no choice but to learn Linux
I only boot into windows about once a month and that's if i have plenty of free time and i want to play some hardcore games. There are plenty of emulators to keep me entertained . There is only 1 game franchise still running that has not let me down and that's the elder scroll series. As soon as they make a crappy game in the series that's it, no more store purchased computer games for me