>>49959826Level and evolutionary stage are measures of power and skill, and are completely separate from age and maturity. A pokemon in it's final form is probably more likely to be older than a first stage, but that's only because it takes time and effort to grow that far. Some never get the experience needed to evolve, and some just don't want to, but age comes all the same.
So, yes, to answer your real question, you CAN have a Kirlia that can ara ara. You degenerate.