Left handed of course! and heck i even got facts to prove it
first, i would just like to remind everyone that left handed are massively outnumber, i think the ratio was 1:9 or something close
second (speaking of myself and my only other lefty friend), left handed people ARE able to use their right hands, just not as good as the left, but the vice-versa cannot be said. Pretty much all the right-handed people find it almost useless to use their left hand
third, (in ref to point one) when you are competing, whether itsa sport or a fight, the lefty will always have an advantage, because most right-handed peeps do not expect the punch/kick to come from the "other" side