I completely agree with you on almost all points (I don't have a social media account either for the exact reasons you mentioned; dropped all of them like a hot potato when I read some of those social media experiment papers) except for this:
> I’m gonna stop reading the news, it’s too much stress for me.
This I feel is actively dangerous. You _need_ to know what is going on out there. While I agree that most of the news counts as opinion (and is marked as such sometimes), you need to develop a skill which parses through the fluff and take just the facts into account. This might not be easy, but it is worth it.