IPhone users who switched to Samsung Galaxy?

So, I've been an iPhone user the past few years, but the 5 is just such a disappointment. I've had three 5's now and they've all had the same battery drain issues and it just seems like the iPhone isn't really evolving and they don't update their software enough. I love how safe the app store is and I like using iTunes for everything, but it's not customizable and the jailbreaks slow it down.
I'm strongly considering the Galaxy for my next upgrade but really have no idea what's better about it other than being able to customize it and the larger screen (<3). I was hoping to find some iPhone users who switched and have no regrets.

It's a matter of preference. Android is much more advanced than iOS will ever be in my personal opinion. Samsung also keeps their word on software updates. The Galaxy S2 that came out two years ago was updated to Android 4.1.2 a few months ago (just an example). Apple will stop updates to your device in 18 months after it came out, so that way you are forced to buy a new Apple device unless you want to stay with your device which is no longer supported by software updates from Apple.