I tried out the Pixel and didn't like it, returned it to go back to my 6s+. Had the Pixel XL been available? I might have stayed Android but the bigger screen is a necessity. I started out with Android back in the day and went back and forth till staying with iOS after the 6+. The Pixel is a great Android phone and I have no problem recommending it to my Android only friends - beats adware but ... I still think iOS is superior - the apps definitely are.
Why is iMessage so great? You might have to have an Apple laptop / desktop to realize this. I can iMessage (text, both iMessage and SMS/MMS) from ANY device I have in my house. So if I left my phone on the couch near the TV and I'm sitting at my Mac Mini in my office - I can make/receive MMS, SMS, iMessages, and make/receive calls from my Mac Mini, same for my Macbook Air, and my iPad Air 2 all without having to run across the house to get the other device. iMessage works VERY well and very fast.
That said, my family and I and coworkers use Telegram for most of our communication. That's also cross platform and we like it.
If I didn't have OS X at home I'd find switching to Android to be a lot easier. Yes, I use Google Voice (I was a beta tester for it too) but it just doesn't compare and it took it FOREVER to get MMS and even that doesn't work smoothly.
No, Apple has my business for a long time but I am VERY HAPPY Android is finally putting out stuff that I consider to be viable competition for the iPhone. Why? Competition is great for us consumers. I hope it makes Apple produce better products so I cheer Android and if people want to switch, competition is a great great thing.
The Google Pixel 2 is going to be a seriously tempting device for me.
My experience with the Pixel coming from iPhone 6s+. Yes, I would have gotten a Pixel XL if I could have but it was back ordered 2+ months.
https://forums.macrumors.com/threads/short-experience-with-pixel-coming-from-a-6s.2018310/