I bought a Nexus One the day it became available, installed endless third party ROMs on it, tweaked it to my heart's desire. Got a Nexus 4, then 5. Today I have an iPhone.
I just need something that works, just because I can tweak endlessly doesn't mean it's a good use of my time. Honestly one of the original biggest motivators was iMessage. A rock solid messaging system ought to be table stakes for a mobile OS but Google has reinvented the wheel so many times I've lost track. Also FaceTime for calling distant relatives.
Sad to say, I don't find myself missing the relative openness of Android at all. Google-branded Android has issues similar to iOS, they also removed ICE Watch style apps. And non-Google Android is work.