I felt the same way you did in the months before owning each of these devices and time and again Apple has proven themselves right and me wrong.
As relates to the iPhone X, after 24 hours with the convenience of Face ID you realize why Touch ID had to go, it's just slower and more work. The things that concerned me about Face ID like speed, multiple gestures, viewing angles, sunglasses, Apple Pay.....Face ID just does it all, and faster and better. Once you use the X for a day you'd understand. Can't be concluded by a few minutes in an Apple Store.
The headphone jack was another thing that disturbed me greatly, but wireless is actually the better solution and I'm much happier now with Bluetooth cans. The X comes with the RCA adapter and standard earbuds with a Lightning connector of course, its hardly an inconvenience to snap the 2" Lightning adapter onto your headphones and leave it there. Turned out to be much ado about nothing.
And you can't look at what Apple "took away" in a bubble. You have to weigh it against what they added. Taking away Touch ID and the Headphone Jack allowed for a much larger screen, added space for a bigger battery, and significant water resistance. Even if you don't appreciate Face ID or Bluetooth audio as an advance forward, you'd be blown away by the best feature of the X that no one talks much about- incredible, ridiculous battery life. Can't think of anything more important, actually. I used to get home after a 12 hour day on my iPhone 6 with 35% battery life. Today, with the X, same usage patterns, I get home each night with a whopping 81% remaining. I've gone 3 days without charging or topping off. It's crazy.
One doesn't need to be a fanboy to support Apple's current strategies. One just has to experience the products and not just believe what you see in YouTube videos and 15 minutes in a store. Trust me on this one.