Well I'm one of those people that some here don't think can leave the Apple ecosystem. Between me and the wife we have a Mac mini, old ipad pro 9.7, iPad Air 2, 2- Apple watch series 3 Cellular, iPhone XS, iPhone XR, 2- airpods, powerbeats and guess what? I left the apple ecosystem because I could no mater the integrations. I learned long ago to keep my data spread out across many ecosystems to not be locked in to someone's walled gardens. So the wife an I also use Googles ecosystem and Microsoft's as well.
Late last year I decided that I'm done with the constant apple tax levied for the privilege of the so called tight integration of the apple ecosystem. SO I preordered a Samsung S10e and begin my journey back to having options and control over my device and all the customizations that I can have. Since I already owned two Samsung Gear S3 Frontiers Smartwatch is covered. IMO my Gear S3 watches are superior because even if I change phones, they work stand alone and don't need to be always coupled to a specific ecosystem for cellular service unlike the apple watches.
Well now maybe some say well you loose the continuity with you mac mini and iPad, well guess again. I got the Samsung Galaxy Book 2 Windows 10, comes with LTE, keyboard, and you guessed it.... the S-Pen. I can answer calls, text, sync and edit photos right from the Galaxy Book 2. And something even apple can't do on ay of it's devices. I can bring up a window of my phones home screen and run all the apps on my phone with all included functions directly from the galaxy Book 2.
So for those that think it can't be done think again and don't ever lock yourself into one ecosystem which make you subservient to whatever whims and features they decide to give you. For me iMessage or facetime wasn't a lock in as I don't care enough about them as others than here in the U.S. it's not used outside in the rest of the world much at all. Same reason the rest of the world doesn't really buy iDevices in great quantity either. For me it's all about the freedom to tailor my devices to my needs and not have the limitations that ultimately you will find with apple devices in the long run.
Simplicity to me is being able to use my devices as I want to use them without artificial limitations on features.