social media as a diary?

I'm in french right now and my french teacher was talking about diaries and how people use the internet as a diary now and it genuinely made me think about how much I rant on snapchat and instagram. if you ever got into either of them you would see my whole life, my friends, family members and how much I talk about my days. She asked if she would ever be able to see our pages and I said no because all of my pages are private and she laughed and said she hoped not. I'm seriously considering just getting a diary like a normal person instead of using my intsagram page as one. I realise that I'm doing exactly what i said right now but this is different haha. losts of luv xoxo