I've trained in the arts of Ninjistsu, Batman Style.
My advice is, take Krav Maga, it's very good, I trained it for a couple of years and liked it, I switched to Ninjistsu because it teaches you two things: First, you are not this body and second, never underestimate your combatatant's ability in combat.
It also teaches us to never give up a never back down, but also, to avoid confrontation if you can.
My advice is:
When it comes down to a fight, it's fight or flight, even though it sounds like you are a coward, flight is the better option, when you have to fight and have no alternative, remember, no mercy.
So yeah, I don't think a lot of you will read this, but if you do, take it seriously. THis is very important to me.