I would wait until the kid is old enough to know not to do that, which will be a different age for each child. We did black out shades and a valance for the baby's room. When #1 was older (5th birthday), she got long drapes.
#2 is a wild woman, and would definitely pull the long curtains down, so none for her yet. At this rate, we'll reassess when she's around 30

The risk is pulling the curtains and the rod or brackets fall onto her head. That's very dangerous.
We're expecting #3, and will have to see what her long curtains horizon is
