Behaviour issues except for extreme cases are not a good enough reason. Unspeyed does are actually easier to bond and the range of behaviours they display are not problematic given the right environment.
I have seen quite a few does with problems caused by speying. They are very prone to adhesions which can cause lifelong gut problems (many unexplained gut issues and problems blamed on teeth may actually be due to this) and I have even seen a speyed doe get very nasty mammary tumors. I never lost one during the opp itself but I have lost two afterwards as they never properly recovered from the anaesthetic and another when she opened herself up again by chewing her stitches and died under the second anaesthetic when she was restitched.
This issue is a genuine concern, please don't just dismiss it.
I would personally disagree with this...my Flo was nice enough prior to her spay, would let me give her head rubs etc...but she would lunge at me if I was in the hutch and bite people who weren't me. Since spaying she is possibly the loveliest rabbit on earth, hasn't lunged or bitten since. I think this is much better for her welfare, she lets me give her medication (she has needed lots) which probably would have been impossible before. She is also very good at the vets now in comparison to before where she used to scream, last year the vet even did a conscious x-ray of her chest! No need for sedation which is better for her.
I was going to bond her with my pair of neutered males (very placid boys) before she was spayed and she tried to beat them up!
Since she was spayed, I had her bonded her with Tubsy she displayed no aggressive behaviour whatsoever!
Concerning problems from spaying, there are risks with any sort of surgery. I'm a vet nurse and I see such complicated surgery all the time, cat brain surgery, dog lung lobe removal...riskier surgeries and more often than not they go home happy!
Adhesions can occur after any abdominal surgery in rabbits, cats, dogs, humans.
Mammary tumours are unlikely to occur if spayed, though may have started prior to spay? Or from uterus stump?
In veterinary anaesthesia, recovery period is always the most riskiest period. Some individuals just have a bad reaction, unfortunately that's just the way it is and cannot be predicted. Flo was induced for anaesthesia the other day for a dental, same drugs as she always has had, she nearly crashed - stopped breathing, went bradycardic, had to be intubated immediately and ventilated as they reversed the drugs. It was random, can't predict that.
Most vets use intradermal stitches now for routine procedures such as spaying, so they dissolve and can't be pulled out.
Not dismissing it...IMO there are a lot more pros than cons, and I'm sure many veterinary professionals would agree. Risks with any surgery/anaesthetic, spay or otherwise.