Our dog is 18months and I think he desperately needs neutering whereas dh does not. He...the dog not dh...humps a lot and chases other dogs, wees on walks every three seconds and gets his lipstick out a lot! He used to have great recall and then his hormones kicked in. Now I worry about letting him off lead although mostly it is ok.
Dh thinks neutering is cruel and it is not a human's place to make such decisions that are irreversible and not natural for the sake of our own convenience! I counter this that in that case he shouldn't have a dog at all because surely pets are living in a non-natural way.
I do the walks six of seven days a week at least and nearly all the looking after. Our dogsitters x 2 (one does very occasional days if I have to go to a meeting, the other when we go on holiday) are still taking him slightly reluctantly but both think he needs the op.
I think dh reckons it is his boy bits that would get snipped not the dog's!!