Need a choice D.... Constant.
I like to fiddle with tech... always have, always will. Ever since I got my first 486DX33, I've been up to my elbows in the inner workings of anything I get my hands on. I got my Nexus 5 in January and I think the only time I didn't go messing around with it was the week I was on vacation... and that was a) I was too busy and b) I didn't have my laptop handy in case I had to sideload or ADB it...
But then again, it's a hobby for me. I go into every little aspect to try to get it exactly the way I want... And it is reason #1 why I would be in technological hell if I got stuck with an iPhone.