Why Spay?
Female rabbits (does) often exhibit territorial behaviours that can sometimes be linked to their hormones. Also some does will exhibit sexual behaviours such as spraying, biting, mounting. They can also suffer false(phantom) pregnancies which mean they will build nests, pluck their fur out etc and can cause a lot of stress and aggression. These behaviours can sometimes be prevented or can disappear after your doe is spayed.
Also there is a risk of urterine cancer, ovarian cancer and mammary cancers in does. This can kill rabbits and is fairly undetectable before the rabbit dies.
Rabbits enjoy company and by spaying your doe it may make bonding with another rabbit easier and will also prevent any unwanted pregnancies.