What makes female rookies attractive?

[Kalyx]

I think the reason, is a combination of things...

First of all, most rookies are more like human-size or smaller, which makes them appealing, on a size level.

Next, most rookies aren't that ferocious-looking, terrifying or menacing, as most of the higher evolved forms are.

Also, as Chaosmetroid mentioned, the more immature or childlike the appearance, the more attractive or appealing they may seem.

As for me, I'm partial to the animal-type forms, especially furry and scaly forms. So, Renamon, Gatomon, Gabumon, Flamedramon, etc are high on my "appeal" list. hough, I'm just as perverted as some of you. I'd watch any rookies mate, as well. (Who knows, maybe I'd join in, too. )