Because we have fewer and fewer shared experiences as our lives diverge and specialize. I'll go out on a limb and say that there's no such thing as a fixed pers

Because we have fewer and fewer shared experiences as our lives diverge and specialize. I'll go out on a limb and say that there's no such thing as a fixed personal identity that is some ineffable quality of everyone. Presumably people with similar identities could bond at any time of their lives, but I haven't found that to be the case. You are what you do and think, and people keep changing. As society becomes more complex with more unique niches, and also becomes less colocated, the chances that you find someone in person with similar experiences keeps declining. Sure you can go online but we all know that's not the same.