I remembered I was on Instagram so I deleted it before posting it.
That’s sad that everything we’re saying can be used against us, in addition to the fact that Instagram already use your data.
PS : Actually I almost never use Instagram, but sometimes I’m looking for some memes
There’s some dark comedy in this state of affairs where it seems the people most interested in your opinions are those who wish to exploit them to sell you things. 
Yes but not only, those people can also be your potential employer, some people looking for the slightest comment you could have shared in the past that doesn’t go their way, etc.
There used to be a time where it was ill advised to post personal information on the web. Main difference now is that a large amount of people are doing it.