My Leica M6 has completely transformed my rangefinder camera perceptions in three months. I used to be quite skeptical about them. Every time I tried one, it just didn't feel right. But as they say, opinions can change, and shooting styles can evolve.
Thus, I'm writing this to hold myself accountable for my previous judgments and show that sometimes being wrong is okay.
(Disclaimer: Although I'm sharing my experience with a film rangefinder, many of my thoughts and experiences also apply to digital rangefinders!)