A mixture of complacency, curiosity, and knowing I can sell a phone online if I dont like it.
There was a time I tried 5 different platforms in a span of two months. I thought Windows Phone and WebOS UI were the most intuitive. I disliked Android at first and thought it looked like a cheap knockoff of iOS. This was before ever trying out Ice Cream Sandwich and then Jelly Bean. But then the lack of apps started to sink with WP and webOS was R.I.P. by that point with terrible hardware. And the complacency of iOS started to sink it as well.
So I eventually started to like Android. It was like watching The Big Lebowski or Dr. Strangelove the first few times. Hardly laughed. Then the quotes and outrageous situations started to grow on me. I realized Android was truly brilliant. I will likely stick with them knowing it is the most flexible and open PS out there and their app catalog is the closest to iOS'. I no longer have the urge to try out more obscure OSes like BB10, Sailfish, or Firefox OS.
I'm generally bored of cell phones as a whole right now. Might try out a different hobby. Maybe go back into gaming. I will just stick to ONE platform, lessen the complications of being stuck or trapped into an ecosystem, and enjoy what I like without restrictions. And even if I preferred an ecosystem, I wouldnt mind being married to a Sony/Google one instead of Apple or Microsoft. Right now Android is my mobile platform of choice even if I know it isnt perfect. But if I can put up with Windows XP for nearly a decade then I can put up with Android for the rest of THIS decade. Google user for life