Hi @tobi! Your discussion is similar to the one about FB, so you could find something useful there: What are your experiences quitting Facebook?
What you are experiencing are the network effect (all my friends are there) and FOMO (fear of missing out). There is a number of things you can do:
- Continue using, as you get value from it. But maybe optimize your use (there are extensions, like demetricators, newsfeed replacements, for FB that hide attention-grabbing elements of the network. Didn’t find them for Instagram yet, though)
- Convince your friends to use an alternative to Instagram (a hard thing to achieve probably)
- Miss out, and maintain your network in a different way (phone, mail, message, visit, etc.)