I'm not partisan about mobile ecosystems; I've spent thousands of dollars on iOS shit over the years, and thousands on Android stuff, too. I like features from both and think that choosing between a good Android phone (Google's Pixel line, essentially) and an iPhone is something that comes down entirely to personal preference.
That said, I spend MOST of my time in iOS land. Why? There's a million little quality of life things I think iOS does slightly better than Android, but I'll talk about just one in particular that stands out as it's a very good example of what Apple gets right that Android still misses the mark on:
Adjusting the brightness of the screen.
You know often I have to do this manually on my iOS devices?
Never. I literally cannot remember the last time I had to manually dim or brighten the screen on a device. They're just ALWAYS at the right brightness level for whatever lighting conditions I'm in.
Out on my balcony on a sunny day? It goes full max brightness without me even noticing.
Lights out in bed at night when wife is already asleep? It dims itself to almost the lowest setting.
It just figures out what is the best setting for the moment.
In contrast, the last two Android devices I used (Pixel 2 XL by Google, and Samsung's Note 9) ranged from "needed slight, but regular manual adjustment to the auto-settings" (the Note) to "this is just broken entirely" (the Pixel).
I had a couple of Pixel 2 XLs due to Google's iffy QA and screen manufacturing woes this generation (another thing Apple gets better; the next bum-out-of-the-box iOS device I buy will be the first). Every one of them, I quickly ended up turning off Android's Adaptive Brightness almost immediately because I can't stand watching a screen change its own brightness constantly while I'm looking at it while stationary in an evenly-lit room.
I never notice my iOS screens adjusting themselves; they're just always at the right brightness.
Again, this is the whitest of whines, the First World-iest of problems, but it's something Apple a) realized was a low-intensity but widespread quality of life issue and b) iterated until it was fixed.
Like, I vaguely remember, many iPhones ago, manually setting a brightness slider because I read somewhere that iDevices like you to do that once or twice so it can set a baseline of what brightness level each person likes in a given ambient light scenario, and then it adjusts brightness against that from there. I feel like this is data it passes along with your iCloud profiles so it carries over from device to device, because I've never had to fuck with it again.
These kinds of things exist throughout the Apple ecosystem, and is the thing that keeps me coming back to them even when I'm seduced away momentarily every year by the latest Pixel phone.