Elementary School/Cellphones?

On the morning show we were asking moms what they thought of elementary school children having cell phones.  Well, being a mom myself I think it's ridiculous in the sense that they are so small and irresponsible and at that age there really is no reason for them.  But now, on the other hand.  As a mom, I worry all the time.  So having a cell phone would allow more access to them as well as their ability to call home more often.  Such a dilema.  What do you think?  Are our lives so high-tech that even the little ones must participate?