Should i get my braces of early?

i have had my braces on for about 4 and half years give or take the orthodontist said that there is a slight problem with the way my teeth go on each other ( like when i chew) they said that i may have to keep them on for half a year more and that there may be a chance the in the half a year that my teeth may still be the same i was wondering should i get them off as there are no gaps and they are straight and i think they look ok