I have learned that there is no actual need to choose one while rejecting others. That said, I have a slight preference for Theravada, Zen, Vajrayana (perhaps oddly) and Pure Land, in decreasing order of affinity.
But for the most part I see schools as transmission vehicles. One can and perhaps should learn from several and take the responsibility of choosing how to care for that inheritance.
It is IMO a matter of self-acceptance at both individual and collective levels.
We are born children, and we seek security. Violence seems to be a way of scaring others into refraining from harming us. But as we mature we learn that it just does not work.
We can learn that. We can see that it is indeed the truth. And if we can learn, so can others. We should accept the resulting duty of doing what we can to ease others into coming to the same realization, by accepting a measure of harm into ourselves if it comes to that.