That was my path as well. There's a very large segment of the tech community with the same story. Started with Android, why not? Fully customizable, had features earlier like 4G. Then realizing that they can be as stable and as much of a hassle as maintaining another desktop computer too (if you're doing it well/right). While I had multiple Android phones over the course of 5 years, it became a habit to restart them daily. The best one I had in that regard was a Samsung Galaxy S3, but it still wasn't up to scratch with the iPhone.
Going with Cyanogenmod (now LineageOS) helped a lot but did not resolve the need to restart often. Then my device which is primarily a phone that absolutely must work reliably and must be secure and updated, is at the whims of a rather lackadaisical volunteer effort.
Irregardless of arguing merits, the bottom line is that it's clear to me that Android's quality does not match what Apple is doing with iOS. Ultimately, I need calls and texts to guarantee to not be laggy and be reliable. It doesn't just need to be reliable, it also needs to feel reliable. I can't remember a single time an iOS app crashed on me. Android failed me in both of those regards in favor of being a mini-PC, with all the positive and negative connotations that includes.
I moved over with the iPhone5S, loved it, still usable as a backup phone unlike all of my old Android devices which are useless today and not even supported by LineageOS builds that aren't years old. I'm using an iPhone SE today, 3 years on with zero issues, still secure, private, fast and stable. It'll be getting iOS 13 in the fall, which looks better than ever.
If Apple releases an iPhone XE, I'll be buying it at launch at any stated price. I would hand Apple $1,000 for the rumored XE. Even if I only used it 3 years, which is on the minimum end of an iPhone's lifespan, per month cost is $28 at that price for 3 years. Considering the support, build quality and reliable utility, it's an absolute no brainer. A bargain. Anyone ever use the 'Apple Support' app? If you have an issue, they help you, really help you, for $0.0. I'm speaking from my own personal experience alone. I don't work for Apple, and only buy index funds. They're simply doing business right, and making everyone else look like fools. They've built their own value through reliable, hard work. Even if the iPhone costs $50 to manufacture.
Apple is one of the very few companies that from what I've seen, gave me the impression that they actually give a damn or two about their own products. I'm actually a .Net developer, a Thinkpad fan (and Macbook, because of the copious service locations), and if it's not clear yet.. love my iPhone.