One of the common problems around here is kids on BMX bikes always take off the reflectors. I can't blame them really, they do break and look dorky.
But what happens is the kids go somewhere during the day and lose track of the time. Then they ride home at night as fast as possible with no reflectors. They also seem to wear black.
There is a hugely popular bike path and plenty of dark roads around here where they go on the wrong side too, and at full speed. There are peds, and all kind of riders on the path and the roads around here at night in the summer.

It would be great if the bike manufacturers would do something like this. Some of the kids would not bother to try and get the tape off.