Being a firefighter is much more fun and you can control the outcome of more situations than you can as a cop. I myself personally wouldn't do it. THe divorce percentage of cops is crazzzyyyy! Unless you never plan on having a family.... they usually start you out making shit money and the only way you make your money is by working lots of overtime... hence divorce whens your wife gets sick of it. Just my .02....
PS. If you do become a cop don't let the power trip go to your head.