This might sound stupid, but sometimes if you leave your cat intact, they don't think they have time for you anymore. I have had MANY cats that I couldn't afford to neuter, and about half of those ran away and never came back, even with our close relationship. This is bad for you, your cat, and the surplus population of strays.
Also, since most cats don't get enough water and food they need anyway (totally not the humans' fault), he will tend to think of what he needs (to him this is reproduction). He will spend less time resting, eating, and drinking, and more time trying to get outside to the ladies.
I agree a bunch with the others that altering prevents disease, and is scientifically proven to expand the life expectancy of your cat. I'd say it is a very wise coice to have your cat altered.
Also, since most cats don't get enough water and food they need anyway (totally not the humans' fault), he will tend to think of what he needs (to him this is reproduction). He will spend less time resting, eating, and drinking, and more time trying to get outside to the ladies.
I agree a bunch with the others that altering prevents disease, and is scientifically proven to expand the life expectancy of your cat. I'd say it is a very wise coice to have your cat altered.