[Pansy-Mae]

So I'd put your question
more like "How much imperfection are you willing to accept?".

I do understand your point and in a perfect world I would 100% agree. However the point is that in this world you can't even begin to predict the final outcome, so you have to narrow the choice down to black and white from the beginning...if you can't accept any imperfection, walk away, if you will be content with whatever you get, then go for it. There is no other way.