I was one of the first groups of people to use Facebook in 2004. Back then it was limited to college students and I remember signing the petition to have our university added to the list of eligible users.
It was nowhere near what it is now. I don't even get half the functions anymore. I simply check it maybe 10mn per day and call it good and have been doing so for nearly 10 years.
I personally don't care for how intrusive social media has gotten over the years and enjoyed FB way more back in the early days. Now I just use it to talk to family and friends. My feeling is that users are getting carried away at how much access is out there. I don't give a damn yet others are thrilled. When my mom started using FB a few years ago I got annoyed about how she'd go on about how she could look up people.
If you've got poor boundaries FB doesn't help. It's not an excuse but it's another avenue. Both DH and I were cheated on by XWSOs who didn't use the Internet. House phones and non-smart phones were their mode. Note I was in college in 2004? Even 20-something cheaters can be low tech.