Stephen,
Greetings, and welcome to the forum!
For some of us, the struggle is in finding the Church, and in finding a place within the Church that we can live out life in Christ with a clear conscience and focused heart. I believe that some Saints could identify with this, having gone through a couple false religions themselves before (and sometimes after!) their conversion to Orthodoxy. I'm sorry that we have to speak of different "jurisdictions" at all. It'd be nice if the only differences we discussed were in customs or tendencies between Orthodox Local Churches.
From the perspective of the great majority of the Orthodox today, it is probably hard to understand why all the fuss. Why not just say we're Orthodox? Why not just say "I'm in Christ's jurisdiction"? Well that's a wonderful response, the the keystone of Orthodox ecclesiology and life is Jesus Christ and the Trinity! Yet, we must all be under specific bishops and priests. Some of these are good, some are bad: holy tradition teaches us to be on our guard. "But there is one thing you must beware of, I assure you. Bad bishops. Don't be overawed by the dignity of the throne. All have the dignity, yes; but not all have the grace." (Gregory the Theologian)
If we were to read an account of the early groups claiming to follow Jesus Christ, though we dressed it up using modern labels, I'm sure that most people would consider it sectarian. Even some of the language in the Scripture could seem sectarian. There's been divisions (including geographical and ethnic, theological, and other) in the Church from the beginning, that's just the way it is. One reason that Orthodoxy has always seemed to mirror the early Church to me is that it didn't try to force a false unity/togetherness onto everyone. We have Paul and John attacking people by name in their letters in the New Testament, and we have Orthodox hierarchs doing the same today. Now, if I followed Paul and John, and avoided those who were their enemies, why would I not follow Paul and John's rightful successors, and avoid those who were the modern day enemies of God's shepherds?