Meh, I think it's neither here nor there. You're going to find just as many health related problems due TO neutering as you will if you don't. Keeping an intact dog is not a cancer sentence. I think if one can responsibly own an unaltered male, there's no problem with keeping them intact. But yes you will have to be extra cautious and you may have marking. I personally will always neuter my future males (not before 7/8 months though, to let those growth plates close) because I'm lazy and don't want the added responsibility.