Use both, Windows and Linux. Sometimes you need a windows box to use a windows exploit. Sometimes you can only do it in linux. Sometimes you want to play a video game so you need windows, sometime you want to feel leeto so you need linux, heh. what I'm saying is, don't focus on one OS, 75% of PC are still windows so if you want to hack 75% of computers on this world you might want to know something about windows.
I KNOW EVERYTHING. ASK ME.