Depends on your intentions with the rabbit and whether or not your bun exhibits hormone-driven behaviors.
If you think that you may get him a bondmate in the future, then absolutely have him neutered.
If you intend to keep him single, then neutering depends on his behavior and whether you can tolerate those behaviors. He's still young now, but down the road, he may start exhibiting hormonal behaviors like spraying urine (on you or your walls!) or losing litter habits, or having excessive urine odor, or becoming excessively destructive with chewing or digging, or excessively humping... if he starts doing those things, then you may want to consider neutering him to help temper those behaviors. But not all rabbits go through those hormone-driven behaviors. Some males do just fine without ever being neutered. They don't exhibit any of those annoying behaviors. So if your bun's behavior remains acceptable, then there is no need to get him neutered (if he remains single).