Mauidog,
Your follow on questions were irrelevant so i deleted them.
Do you NEED a fire extinguisher? No, but even if I did, you wont see me carrying one around just incase there were fires. Now if I came across fires everyday, then I would carry it everyday.
Do you NEED an airbag in your car? According to the government I do, they are in my newer cars n trucks no matter what.
Do you NEED a police force? Me personally, No, but its not my choice.
Do you NEED life insurance? No, but if were going to die soon, I'd wish I bought some so my family would be set.
Do you NEED a first aid kit at home, at work and in the car? Yes, yes, no. But you wont see me carrying one around cuz I dont need bandaids that often.
Do you NEED to learn CPR? No, but if I was interested in saving lives, or had friends/family with heart conditions, I would learn.
Do you NEED to learn how to swim? No, but I grew up here so I did learn.
Do you NEED to finish high school? No, but its not a good idea not to.
Do you NEED to go to the dentist twice a year? No but I do, but you wont see me carrying macsack around just in case I get a cavity.
Do you NEED to carry a gun? The majority of the people will never have to use their concealed firearm. So based on your statement, then, no, I dont need to carry one.