This is off-topic, but I just wanted to say it:
Mushroomers aren't half mushroom. They just like mushrooms. The mushrooms on their heads are actually hats, as seen in a SMB3 cartoon, in wich Toad taked it off, I don't remember why (I also remember that he was on the desert, running out from Bowser, with that SMB3 funny running sound -- that's how I know it was a SMB3 cartoon and not a SMB2 cartton... maybe). That's why I like Mario cartoons: they explain the Mario universe in some way... they make it a bit more real.
And, about Bowser violating the Princess, he wouldn't. Bowser doesn't like the Princess, he kidnaps her for polithical reasons (i.e., having control of the Mushroom Kingdom (SMB1), making Mario and Luigi go rescue her so he can have a revenger (every other Mario game, I guess).