Except...my husband chooses Catholicism over any other religion. He is an atheist, and as such he is open season for many people of faith. He comes home shaking his head over some of the things he is told. I explain Catholic teaching, and his response is, "Okay, that makes sense. This other nonsense does not." So I explain how that other "nonsense" happened to evolve.
My guess is you may not understand the Catholic (Early Christianity) approach to scripture and the Bible. Also, that all you see is the times some in the faith went off track without seeing how those in the faith who remained on track, worked to bring everyone in the Church back on track.
Still, enough of that. What is your one greatest complaint/difficulty with Catholic teaching? Could it be you have misunderstood something or not have the complete picture of that teaching?