Reasons for:
+She cost £500 and has all the pedigree/kennel club background and therefore (in the eyes of some in the household) is a sort of pedigree puppy-spewing cash machine.
+Puppies are cute and the birth might be educational re facts of life
+She deserves the chance to have at least one litter
Reasons against:
+I feel weird at the idea of selling someone's babies, even if the someone is a dog. (illogical given that we bought her, but still feel weird about it)
+We would sell the puppies and she would go through whatever grief it is that dog mothers go through when their babies mysteriously disappear. Presumably the puppies also grieve in some way for their mother? Ours didn't howl into the night but I feel weird about that too.
+If we sold the puppies and their owners could not cope for some reason, we (I) would be obliged to take the puppies back (that is more responsibility than humans who give up their babies for adoption have).
+I do not understand the supply and demand of pedigree dogs. Surely there are more dogs than there are loving owners? I don't think her breed is about to die out. Frankly, I don't understand why she cost so much (althought worth every penny to us in entertainment and fun, etc) when presumably there are loads of breeding dog mothers.
+Dogs are being put down all over the place. Surely the market is flooded? I truly do not understand the supply and demand of pedigree dogs.
+(Trump card!) The vet looked at her and looked at us with a TRAGIC look on his face. I assumed she had some sort of terminal puppy ailment and braced myself. He then told us that she has an 'overbite'. This meant buggerall to me but I gather it means that she is not going to breed Crufts champions and (in money terms) is not a good bet to breed. She was the smallest of the litter and dc chose her for that reason. She is also very very pretty; it was a heart not head choice. (I think that George Michael has an overbite and I notice that he has not bred either. Good enough for George...)
Basically I think that against is far stronger than for. If she had a litter and we didn't sell them we would have a load of dogs who were sibs and wouldn't they then all shag each other?
If (when) we decide that she should not have any babies at all and get her done when she has a general anaethetic for the microchip, should she have an opportunity for a (non reproductive) shag?