Why are there so many people concerned about the word God being in the pledge of allegiance ?

So I was wondering about this. I just get bothered by people who are so offended by it. Our forefathers came for religious freedom basically so why is it so bad to keep the P.o.A. the way it is. It doesn't mean you believe in a Christian god it means you believe in q higher power. I quite frankly don't care abouy your personal beliefs but don't go try to change our country's history jusy cuz your offended. We can only accommodate you with so much if you don't like it leave.