They have close to zero modern tech
Let’s start with an easy one, shall we? The Amish have a very strict and conservative take on technology; more specifically, modern technology, as they wish for the Earth to remain ‘the way God originally created it’. The drive no cars (instead resorting to horses and carriages like the picture above), use no computers and very sparingly use old phones; they don’t even use lamps! Instead, they use candles. What a way to live, eh?