resisting the temptation to say something 'saucy'

... and to keep this in line with topic... even Tantra have a left and right path.
The left path would be the equivalent of what we think of as 'black magic'. however, don't Tantra(ists?) consider either path to be equally valid to enlightenment? in other words,ending up at the same point. interesting philosophy. and what is being said here is that there are no such 'paths' in Buddhism?
I'm not really making any point, because I'm just reading and learning. I'm just curious as to how someone could live life without making dualistic decisions.
vegetables are good / junkfood is bad
terrorism is evil / peaceful is good
love vs hate
pain vs pleasure
.
.
etc.
we constantly make decisions like this every day without even thinking, some out of survival, some for social harmony...our instincts and morals are on automatic pilot most of the time - but they are there, and making subconscience decisions between X vs Y.
If Zen goes deeper than instincts ...then what is it that guides a Zen Buddhists morals? surely at some level there has to be choices being made...and as long as there are choices being decided, there has to be dualism. right vs wrong (morals) or best vs lesser or danger vs safety (instincts).
see what I'm saying? It is my suspicion that the absence of dualism is an illusion. or at best, an abstract thought which is interesting to toy with, but impractical in practice.
what am I missing? (I'm expecting a: 'you're being too rational' reply from Tim. which is ok, but if thats the case, then I'd like to hear how you came to learn what you know...by living these philosophies? or by reading about them?)
Thank you both...thought provoking stuff.