It's all a matter of perspective, e.g an accurate sexual behavior network would be of tremendous value to epidemiologists and public health practitioners, not to mention when people need to notify former partners about disease diagnoses.
The core argument here appears to be the "cheapening" of experience driven by "social", without any acknowledgement that social also enables new experiences. Sure, facebook has cheapened the value of remembering a friend's birthday, but it has also enabled more immediate involvement with friend's who you don't get to see that often (geography, parenting, loner-ism, etc).
"Social" changes all kinds of things. It's consequences are far-reaching, and we're just barely starting to figure them out. The advent of the automobile "cheapened" travel experiences, but also made travel accessible to the masses, not to mention a slew of modern conveniences. As a society we're still trying to find the right balance for how we use cars (greenhouse gases, near-surface pollution, exurban isolation, etc). People who write "cars are ruining society" essays don't actually contribute to the conversation in a meaningful way. To be dismissive of all things social based on such a small sample of human experience feels short-sighted (and out of place in a technology-oriented discussion community).
Aside: The closing reference to Philip Larkin is amusing, as he was a racist and misogynist. He decried the "backward" steps post-WWII society was taking with regards civil rights.