Android advantages?

I just upgraded to the iPhone 5, and I'm still eligible to return it for a different phone if I so choose. I know all of you are experts, so what are some features of Android as a whole and the Samsung GS3 that I should know about? I'm very savvy, but I'm fairly unfamiliar with Android. Rooting and going to CM10 is not something I'd be opposed to either. Is 4.1 satisfactory, since it's likely to be the last Android version the GS3 will see? Any other advice you have would be great. I'm not actually 100% sure that I should even switch. Let me know what you think I should do, and why. Thanks!!