What the horse world needs right now is NOT more stallions....and probably not more horses in general! Unless you are truly committed to campaigning him and carrying out a program of quality breeding, geld him. He's a beautiful little guy with good breeding behind him. There are lots more where he came from. The US does not need more horses.
Have you spoken with breeders lately? Most of them are either cutting back their breeding programs or getting out of the business all together because of all the problems in the horse industry. Too many horses, not enough people who can afford to keep them (and know what they're doing.) Why would you want to add to these problems? Enjoy your gelding.