I don't quite remember, but I don't think it was a social network then, I think you posted the photos in other networks, and then they made it into a social network and something strange happened. People started posting pictures of food and just general daily life stuff and I thought this was a small group of people who were a extroverts and just wanted to show off idk, they ate beautiful food.
Then something strange happened. This behavior started getting normalized, all other insta like apps disappeared and shortly after, it became necessary to have an instagram account.
I remember at the time I thought something was off, to this day I think I have posted a total of 10 instagram images, they still have the old filters, and stayed off of it since.
But it's been interesting watching it morph into this hydra that simply cannot be put down, to the point where it's more powerful than governments.