Sparity haters are getting to be a cancer on this fandom! There are plenty of logical reasons to believe Spike is older than he looks. And the fact that he's a "baby dragon" is a half-baked, overused, debunked numerous times argument. When people are ready to get some real evidence of their claim that he really is that young, then they can get back to us. Until then, they need to shut their damn traps!
I have my reasons in its defense, and I may post my reasons later.
By the way, who wants to help me with a Sparity fic?