Pokemon can't grow if they don't gain the experience that fighting gives them. I'm pretty sure they evolve for a reason, so why not help them grow?

[A ledian flies over to sit next to her trainer, obviously interested in what they're talking about.]

I'm still not really sure, but I think most pokemon would do something if they didn't want to fight. I think their standards are different than ours, so while I don't understand exactly that doesn't mean I won't support them with everything I have.

Like Lady here. [She glances at the Ledian fondly.] When I met her she was still a low level ledyba, and she was getting picked on by some wild grass type pokemon. Now she can stand up for herself.