It's definitely the format and the quantity for me. Seeing an old friend in person and having them tell me about their life and accomplishments, even showing me pictures, does not make me feel the same way. I think it's also the fact that I turn to social media when I'm feeling lonely, so seeing a feed of people at their best moments, on vacation with friends, getting married, having children, etc... makes me feel even more lonely and isolated. Also, social media is full of people that I have lost touch with, who never check in with me or reach out to see how I'm doing. I've found that I feel much more connected by reaching out to old friends one on one and catching up with them via texting or phone calls. Likes and comments just don't cut it.