[eindiran]

A big reason is that parents read kids' text messages. If there is no text message sent, there is nothing for your parents to find.

[weare138]

I think it's also because of the teachers. This way if the teacher accuses them of texting in class, the student can deny it and there's no evidence of the message.

[gowld]

There's a delete button.

[sesuximo]

back in my day we had Snapchat