What actual contact do you have with these people outside of social media? My ten year reunion was an eye-opening experience for seeing the reality of everyone's situation. Although I never attended, I am told the 25 year reunion was even more so. Some of the people leading the most difficult lives tend to be those with the most perfect social media presence.

Another question... I have the impression you are going from profile to profile and holding them up to scrutiny. Is this so? I would encourage you to stop doing this. You are certainly not doing yourself a favour.

Lastly, take this opportunity to fine tune your Facebook account. What does your own profile suggest about yourself? Would you agree that you too have tended to emphasize the positive and left out the more difficult aspects of your life? So too, consider those that you have friended. Are you really friends? What are you gaining from being friends with these people? I am pretty extreme in that every single person on my list I know personally offline. You may not need to do that but I do recommend you whittle your own list down.