Honestly it is really a cute over load, I can see why some people would think that way. But honestly you need to stand your ground an adult can play what ever the heck they want. I know of grown women who still watch Pooh Bear and Hello Kitty and they aren't made fun of.
Not that I think you should be watching Pooh Bear or Hello Kitty but the point is its okay for an adult to play cute games. Even childish games. Now if your playing Dora the Explorer that might be going alittle too far. But Nintendo made Kirby for all audiences they just chose the story book form and yarn as an interesting art direction.
-JC7
"In God We Trust - In Games We Play " - Joel Reimer