And no, I do not like them.
It's not about the hardware, the software or usability.
It's about the fact that mobile phone has become the 21st century leash.
I do not install random apps, and still my phone is always busy and burdened with notifications, notifications, unread messages and such.
Wherever I am, day or night, someone is going to trigger a notification on your phone, send you a message or worse, CALL YOU.
And thank god I ditched Facebook a long long time ago.
This is _SO_ annoying.
Also, it is ABSURD that I have to manually edit notification settings for every app in order to disable crap.
And apps want absurd permissions (stupid example: want to convert degrees to radians? well, I'm gonna need access to camera, microphone, your contact list and your identity). Thank god android 6 fixes this.
Sometimes I think I should switch back to my old (but SILL WORKING) Nokia N73, and keep my Nexus 5 as nice toy, just in case I need Google maps or something.
I love unmodified android. I won't get an android device that another company has modified due to how long, if at all, they take to get updates. I also think they're kinda ugly or gimmicky anyways.
Nexus 5 and 7 I loved.
Nexus 9 is disappointing. It's just not powerful enough to provide a smooth experience for me.
Developing wise, I'm conflicted. I've done iOS and android development. I don't like Java and I like ios's framework pattern but android is easier to get up and running IMO which is nice. Also now that iOS has Swift, which I think is a lot better than objc, it makes it harder for me to want to develop for Android. I know you can develop in a bunch of different things for android, but if I was doing something for production, I'm not going to be using something not supported by Google.
I very recently bought a Nexus 6P. Very nice device and makes a compelling point for big screens.
I am still in my adaptation phase and need to decide whether I prefer easy one handed usage or a big screen.
The pixels dance on that screen though.
The camera is superb.
The rear bump is another compromise. I don't like it more than the camera bump on the more recent iPhones : I understand why it is necessary (good camera captors just need some room) and for such a large phone, making it as thin as possible is a good idea.
So, to sum up, I like it :)
Before the 6P, I have been using a Nexus 5 for 2 years. Very good device. Some of the best real life performances, especially compared to the disastrous samsung devices.
I also have a 2013 nexus 7 tablet. I only use it for reading / watching youtube. Nice device too.
I have the latest generation Nexus 7. It's starting to be slow recently, but I still like it.
I also have an android smartwatch (Sony SW3) and I usually don't bother to wear it.