I'm glad it works for you and I truly wish I had the same experience with trying Fire TV.
My apple TV 4k has been ROCK Solid for a year now. I've only had to charge the remote once or twice (so little I can't actually remember) Also no need to search for or buy batteries. I guess the touch pad can be kind of a pain for some but it doesn't really bother me.
Plex & Infuse work amazing.
On the other hand of fire tv, several apps constantly break from bad updates, netflix service would go down a lot (for hours!) Slowness, Bad UI, Ads! I remember at first when you buy a firetv it works great but somehow it deteriorates and becomes slower or their shoddy software updates make it perform worse. Also the Plex app on firetv is god awful. The only thing I miss is being able to turn everything on by talking to my Alexa.
I think the reason I like the Apple TV more makes sense, it uses a more powerful CPU.
There's also another reason why the Apple TV works so well - it's researched, designed and made by the world's BEST computer company. They are experts with software, hardware and quality components. Of course it's going to be outstanding with a great user experience and longevity.
It's a quality product. It could quite easily be used in a professional environment - broadcasting studio etc 24/7 with no problems - just like all of Apple's product often are.
If something like the Amazon is cheap, then there's a reason that it's cheap and someone suffers along the line - whether it's the customer or the employees or the environment or all three!