Do I need a M&P 2.0? #gunstr
Need? Probably not unless you're not already armed. Im of the opinion that if you don't train with it, you don't need it.
Its a nice gun, but so is Glock and others. I'd just choose one you feel you like and stick with it and train it a bunch. If you're looking for a concealed carry it is a full size frame and slide but otherwise quite nice.