The reason for me is that when I grew up SMS messages weren't as an early teen and instant messaging platforms such as Facebook allowed me and my friends to cha

The reason for me is that when I grew up SMS messages weren't as an early teen and instant messaging platforms such as Facebook allowed me and my friends to chat using minimal mobile data, which was much much cheaper than SMS messages. As a consequence, the majority of my friends, family and circle were on Facebook and it just so happened that I could also message them for what was essentially free. Furthermore, if I was at school and I met someone I would just add them on Facebook. Which was much easier and seamless then asking everyone for their mobile number. I never said that iMessage doesn't work, just that you can only take full advantage of its features with other Apple users. And my continued use of Facebook messenger has been because of how myself and my friends grew up using Facebook. As a result all of my friends can currently talk and collaborate on Facebook messenger where the experience is the same regardless of the device you have.