haha... good introduction Crell! I know what you mean, the intro post was the scariest for me and I can chit-chat about anything :)
I think you are going to really like this a lot and be very successful given your background and personality. In fact, I'm betting you are going to be a star here by the end of 2018.
I know what you mean about competition from other social sites, but I think you will find your posting patterns will shift in due time!
Welcome to the site! And if I can help you, let me know.