I don't see why everyone has a cell phone... I've seen a 8 year-old kid with a cell phone O_o It's complete nonsense.
Reasons not to have one:
#1. Cost
#2. Stupid conversations with little value
#3. Waste of time
#4. Bad games, get a computer if you want good games
#5. Text-talk makes you lose IQ and spelling knowlede
I'm pretty sure there are cell phones you can buy that only call home and 911... And they are cheaper...