It's sort of like the PC User Groups that were more or less rendered redundant by the internet. I remember going to the HAL-PC (Houston Area League of PC Users) monthly general meetings as a kid and there could easily be over a thousand people there when they'd do things like having Microsoft and Lotus come and present their latest versions of Excel/123 in a "shootout". There were great door prizes, too. The internet came and there just wasn't a need for that anymore. It's kind of a shame, though, just because it felt like a real community thing.
I mean, I can sing or whistle any song I can think of -surely thousands of tunes- without thinking about what I need to do with my lips. That same mechanism that connected tune in head to lips and mouth can also connect tune in head to fingers on piano with enough effort.
It is a common thing among those who grow up being praised for their intelligence. If one comes to base their self-worth on their intelligence and believe it is a static quality they were born with, struggling and/or failing could demonstrate that perhaps they weren't as smart as people gave them credit for and thus decrease their inherent self-worth. They quit things if they don't immediately excel at them or just adopt the "slacker" role and put in minimal effort, brushing off their failures as merely the result of not really caring about whatever it was they were attempting. "Eh, I could have been good at [x], but it bored me" or whatever
I think the bigger issue is why FB hasn't been able to create the kind of conversations that reddit does- the lack of real threading and the lack of a true downvote (preferably anonymous) keep conversations on FB abysmally superficial. You can't engage in a debate with someone if the back-and-forth gets impossible to follow after the second reply, especially with more than two participants. Likewise, FB and users have no idea whether people disagree with a post or are simply ignoring it; or on something like a critical article, whether a user agrees with an article and it's the article's subject which makes them angry or the user disagrees with the article and the post itself makes them angry. FB, with its status as the defacto social network could be a place where people have real constructive discussions, but instead its inability to foster real dialogue has a lot to do with the current stupidity of political discourse and the problems with reality bubbles and whatnot.