I'll have to agree with Wolfie on this one. There are way too many dogs that end up being bounced around from home to home, or end up at the humance society or animal control because someone had a litter of pups and couldn't find GOOD homes for all of them.

Besides the expense issue, your pup will live a healthier life if you get him nutered. And you'll be happier if you take him to the dog park and he's not trying to mount the females or trying to get aggressive with the males.