I like it a lot and no, I don't think it's boring. I've never known anyone who is called
Sam, so I'm not bored with it. I know one
Samuel but he is always called
Sammy, never
Sam. But I don't like it as a full name, as I think
Samuel is great so I would never bypass
Samuel and go straight to
Sam. I really don't care for nicknames used as full names.