Should i really go for being a fire fighter?

i'm 16 and for some reason my parents want me to start my life early. my mom wants me to be a doctor. and my father wants me to be a cop, and my stepdad wants me to be successful. i really just want to be a firefighter but my mom said i would have to be a fire chief and get my masters in fire science. but then i think back and want to know if thats enough money for me to live. so someone please tell me , even if you are or not in this field of work. will i be able to live stabble in a nice house with 2 good cars. or should i try taking over my stepdads business.