broke my nose when i was 8, the doctor reset it, wore a bandage for about a week, now it looks  as if it was never broken, but they said it was because of my age, had two black eyes though for about 3 weeks 
then only negative out i got out of it is that now i snore
if it were me i would just go talk to a reconstructive surgeon, depending on how you broke it you might not have to get it fixed,if you have multiple breaks then you might want to get it fixed, unless a bump or crooked nose doesnt bother you