Share 'When to castrate?!'

We have a (nearly) 6 month red setter puppy who we have booked in at the vets next month to be castrated.  I am having conflicting feelings on this and any thoughts or advice would be appreciated in helping us to come to a decision.  One school of thought that I have found on the internet is that 6-months is too young and you have a perpetual puppy....and the other school of thought is that 6-mon…