Tikyes_mom,
You couldn't be more wrong about NOT spaying or neutering a bunny. Females are especially prone to mammamary and reproductive cancers. Cancer will certainly end her life a lot earlier than not and it is a horrible, painful way to die. You will be playing roulette with your bunnies health!!!

Also her urine will have a stronger smell because she'll be trying to attract a mate. As they get older, many unaltered bunnies, both male and female, will get very aggressive with their owner when they do not get that mate...they may bite you or spray you with urine to mark you as "theirs" They will pee on things you leave on the floor. They will hump your shoes and you. And in the meantime they will be miserable because they don't have a mate and are not doing what comes naturally! You are doing your rabbit a huge disservice to let her suffer through that.

Spaying a female is a tricky operation but IF you have a rabbit specialist vet, that person wil be experienced with administering anesthesia and your bunny should be fine. Not all vets get the extra training required to treat rabbits, so even if you didn't have her spayed, you still need a rabbit-specialist vet to treat illnesses that invariably happen.