I've never been quite sure why looking at and appreciating beautiful butterflyfish is acceptable for any gender, but doing the same with butterflies is only acceptable for girls, and sissy behavior for guys. Why is looking at beautiful insects more girly than looking at beautiful fish?
Hey, I find just about all of God's creatures interesting on one level or another, so sue me!
That said, I have to admit that a preying mantis would be a cool addition to the butterfly garden.