Yes I think it's important to recognise you not only lose the polish of iOS, access to apps that are thoughtfully built and designed first for iOS and then badly ported to Android (with only a few exceptions), privacy, seamless experiences across all your screens, and all the delights that Apple brings to the table when it comes to maintaining communication with your friends and family.
You should think very carefully before giving all the above up.
As some of the threads in here show, plenty of people regret their decision later (although admittedly others are satisfied or OK with their choice). Whatever you do, don't rush into it. Think about how important your Apple devices are to you, and how much value they bring to your life, and how sad you'll feel when you walk away from it.
You'll have to send an SMS letting them know where you are. There's no way to track it like you can with iOS.