Can anyone give a single reason why we are better off with Social Media than we were before it?
If I'm allowed to put on my academic hat for a moment, social media really is something of a problem, and one we don't fully even understand the limits of. In a nutshell, because people tend to post good things on social media ("Yay I'm on holiday!", "Yay I'm at the club with my peeps!", "Yay I bought a new TV!") it creates the impression that other people's lives are good things / highlights all the time, and because nobody's life is really just highlights, it's super easy to fall in a trap where you compare your own life (which contains some highlights, some low points, and mostly just everyday normal stuff) to this unrealistic image, and feel inadequate or get the vague impression that your life should be better than it is. This is a problem and issue that's currently being written a lot about in psychology/sociology circles, and it's one of those issues you have to be constantly cognizant of lest you fall victim to it.
Social media also gives a platform for people, and while some people use it for good, a lot more use it to spread negativity. When you put your life on display, you also open yourself up to largely anonymous criticism which can get extremely hateful and hurtful. It's easy to pretend the Tyler the Creator "just turn away" advice is good, but of course it doesn't work. If someone calls you a useless fat sack of crap, it will stay in your mind and if it keeps happening enough, it's easy to internalize it and start to believe you really are a useless sack of crap.
Finally, social media also makes it easy to be distracted constantly. It's a never-ending supply of new things, and it's extremely easy to get addicted to the point where you're unconsciously refreshing various social media platforms all the time, and when you're not you feel like you should be. It also creates a situation where you might feel like you have to compete for attention and to keep posting constantly and put yourself out there, to create some kind of personal brand for yourself (even if, again, subconsciously).
Compared to all of this "it's nice to talk with friends" kind of does seem insignificant, doesn't it?