The point of Christianity isn’t to switch off rational scrutiny. It’s to realize that reason itself points beyond its own edges. The disciples didn’t follow Jesus because they stopped thinking. They followed because they met a Person who made sense of what their thinking never could.
As for “why this faith and not another,” for me it wasn’t about comparing systems. It was that every story in Scripture, from Genesis to the cross, keeps tracing one pattern: God coming toward humanity, not demanding that we climb up to Him. Every other belief I studied started with what we must do. This one begins with what He already did.
I don’t expect that to “prove” anything to you, but maybe it’s something to sit with and find Faith in. The story of Jesus resonates with billions of followers, more than other religions, not because it’s the best or default religion.