What are your thoughts on neutering male dogs(CKCS only), I'm unsure as to whether to neuter my boy(pet only). I never plan to breed from him or show him but am curious as to what others feel about this subject.

Pro's and con's would be gratefully received, i realise that there are great health benefits in the long run but also that if problems do arise then castration is always an option later on. I've also been advised and read that dogs can lose their 'spark' after castration and that it shouldn't be mandatory for all breeds of dogs.
In the UK castration isn't mandatory for all dogs so would be interested in others views especially if you are from elsewhere.

Thanks xx