No need to imagine, when it is reality. Not having friends means: no motivation to do anything, not doing anything, getting depressed, becoming cynical, getting less and less socially active, social skills get worse and worse, you start shutting yourself out of anything in rl and after a while online, being really bored, not getting any self confidence. Well at least there's enough videos on Youtube to watch, although you can't really call it a life anymore, that's for sure. Can one like such a state of no progression? Nope, but at least it's kinda survivable, otherwise I'd long since bit the dust. {XD}
Is it recommendable? Nope, and anyone who states otherwise hasn't experienced this state for long enough (I'm talking about years).