You may initially detest using deadly force--but you'll turn into a pirate-pwning god the second you get your mitts on a gun. It doesn't matter if you've never shot one before, or if you don't have any formal firearm instruction. Neither did Jason, and he pops domes with remarkable accuracy. After all, it's not like people dedicate years of their lives to marksmanship!
The hard part is finding a gun. Once you do, you'll know how to chamber a bullet; how to reload a magazine and insert it into a weapon; how to equip and calibrate things like silencers and scopes. And you'll never have to worry about any of these things failing, or your shoulder getting sore from all that recoil. Best of all, when bullets just aren't enough, you'll know exactly how to prime a grenade, molotov cocktail, rocket launcher, C4 explosive, flamethrower, or any other super weapon without fear of complication. That's just how normal people roll.