I mean, it probably goes without saying, but the Found Family trope is so popular because so very many people are so terribly, terribly lonely

I adore the friends I do have immensely but god it would be nice to have like five people living nearby who I could call on for help or to hang out at any given moment

Found family, or, the villager impulse

when aeschylus said 

πολλὰ γοῦν θιγγάνει πρὸς ἧπαρ: οὓς μὲν γάρ τις ἔπεμψεν οἶδεν, ἀντὶ δὲ φωτῶν τεύχη καὶ σποδὸς εἰς ἑκά- στου δόμους ἀφικνεῖται.
ὁ χρυσαμοιβὸς δ᾽ Ἄρης σωμάτων καὶ ταλαντοῦχος ἐν μάχῃ δορὸς πυρωθὲν ἐξ Ἰλίου φίλοισι πέμπει βαρὺ ψῆγμα δυσδάκρυτον ἀν- τήνορος σποδοῦ γεμί- ζων λέβητας εὐθέτους.
oh, many things hit the heart. everyone knows it: in place of the men they sent, only arms and ashes will come back home.
war, that money-monger body-broker scale-swinger with battle balanced on his spear, he sends them back to their families, dust from troy’s burning mixed with tears for the man replaced by urns and ashes.

yeah that’s the iliad. it’s about the exchange rates.