Westerner's are dead wrong to assume that Zen Buddhism is a philosophy or can be treated as such. The point of Zen, which is a mystical school of Mahayana Buddhism, is to experience, directly, the absolute within us which transcends the mortal frame. This is no path for those who take pride in the speculative and concept forming intellect; nor is Zen Buddhism the acceptance of meaninglessness; that, for example, there is nothing profound to realize in this life except learning to live in the here and now, accepting it in all of its here and nowness! This is a fool's Zen.
Those who run and those who attend modern Zen centers don't accept Zen Buddhism's role as the mystical school of Mahayana Buddhism. In their heart of hearts the real mission of Zen is to help their parishioners deal with the ups and downs of modern daily life; the meaningless and skepticism that pervades it.
These same people cherry pick from the canon of Zen Buddhism. They search for examples which support the underlying modern interpretation of Zen that accepting the here and now is the main work of Zen. Just live in the moment whether at work or sitting in zazen. And when life becomes, at times overwhelming, sit longer in zazen. Eventually, problems go away. Life returns to the here and the now. This here and now practice finds refuge in Dogen’s interpretation of zazen that practice and enlightenment are one and the same. But this form of Zen is not like original Zen which is not like anything Dogen taught. It is certainly not Mahayana Buddhism either of which Zen is its mystical school.