I asked a co founder of a tech startup, "Why use MEAN stack? " his reaction \_(ツ)_/¯ because it's cool and famous.
STOP TRYING TO USE THINGS WHICH ARE COOL YOU'RE MAKING SOFTWARES NOT MOVIES

Yeah I asked the CEO/CTO of a small but successful website why they chose Angular over, say, backbone. He gave me this puzzled look and said "because that's what the developers knew" in voice tone insinuating I asked a silly question. It was really bizarre.