Lady riding her Brompton, so cool!
But kids don't text and ride, totally not safe.
I was not a fan of foldies before. They seemed to be little bikes for little kids. They looked odd and you looked funny riding them as well. I am glad to say I got over myself and decided to get one around a year or two ago. Boy, I am glad I did. My Dahon Speed D7 is now my favorite bike to go cycling around my neighborhood. They are just so maneuverable, easy to ride and really quite a revelation.
My other bikes are in storage now, seldom seeing the light of day. It's just so easy to grab your foldie and go. Another plus is for space challenged homes and apartments (like mine), these fit the bill perfectly. Even in their unfolded position they take up a much smaller place, more so when they are folded. They are perfect for mixed mode transport (train/bus and last mile rides) and even for long distance cycling and touring. They are just so versatile.
Foldies come in all price ranges as well, from the uber expensive bromptons, bike friday's and birdy's to the more affordable Dahon, Giant etc. Try to steer away from the very cheap supermarket foldies though. Those can be really awkward to ride (wrong dimensions, improper gearing, terrible ergonomics). Those can really give you a bad impression of foldies.
So if you are still on the fence on whether to get one for yourself, please do yourself a favor and try one. Leave your preconceived biases and ideas behind. You might be in for a pleasant surprise.