[matese]

Neutering will not break Flints spirit, he will be the same lil mischievous boy he is now.
When I got my first girl she was a wee lil thing, the thought of cutting her open to spay her, I just could not do it. Three years later I bought my second wee lil girl, again, I could not bring myself to do it Three years later I got my 3rd wee lil girl, I forced myself to have her spayed. My first girl was 14 years old when she got Pyometra, a deadly uterus infection, long story short she died 9 days after surgery, 6 months later my 2nd un-spayed girl got Pyometra, I knew the signs and rushed her for emergency surgery, she live for 6 months after surgery.
The point I am trying to make is, I know how hard it is to have a wee lil baby and to have to make a decision to alter the wee little baby. We have to make tough decisions for our fur babies. Neutering is a life saving surgery. An intact male will be an aggressive, dominating male. A intact male can smell a female in heat a mile away, you chance your intact male bolting out a door or yard to get to that female, you chance your dog running away and never getting him back, getting attack by another intact dog. I could go on and out of all the pitfalls of having an intact male.
You have made the right choice to get him neutered, health wise it could be a life saver down the road.
Have your hubby read articles on pros and cons of having an intact dog, hopefully he will see why neutering is so very important to do. And his personality will not be affected.
Do read the links ladyjane posted, very good information.