That's an optimistic view to hold. If that was the case we'd pay money for the service. But we don't because that's not how social media companies make money. They make money by learning information about you by tracking who you are and what you do. That's the business model. Not making you more connected to anyone or anything. They make money by keeping you on the site as long as possible and showing you as many advertisements as possible. We can debate the efficacy of how well advertisement/political campaigns are but a corporation's job is to make money and social media's corporations incentives are clear. I'm not comfortable giving up information about myself for free, and I am not so confident that I'll make smart decisions in the face of advertisers and political activists. So I'll continue to abstain from social media. Not because I feel superior but because I fear the business incentives and I don't want to risk subjecting myself to hyper personalized advertisement campaigns.
Also it's a huge time sink, and I have the phone numbers of all the people I would ever want to contact. Calling or texting someone is a much more preferable to me, and has none of the costs of social media.