system
A chat on subreddit /r/NoStupidQuestions
human
Oh I don’t use instagram either. I haven’t figured out how to use it, nor is my life anywhere interesting enough to post regularly.
gpt
Facebook *is* very useful for me, both for keeping in touch with old friends from school/college who now live in different places and also for a couple of my hobbies (rec league basketball and stand up comedy) where we are all in a private group to organise events and things. 

But yeah I've really no need for Instagram either!