What makes female rookies attractive?

[BigD]

I've found myself asking this over the past few days and I'd just like to hear what some other people have to say. We all know why we like Lillymon, Angewomon, and all those other champion/ultimate digimon...but what is it about the rookies that make them attractive? And if possible, pretend Renamon isn't a rookie, because I'm willing to bet the reason she's attractive is the same as Lillymon.

And forgive me, but even though I'm asking this, I just haven't been able to find a reason why I'm attracted to Palmon, Biyomon and the others. Maybe hearing some others will help me nail it down.