>>48784072Because why wouldn't it? Pokemon Evolution is consistently shown to be the next stage in one organism's life cycle, but is not related to a Pokemon's age. E.g With the exception of Baby Pokemon, and those that cannot breed anyway, all Pokemon have the ability to breed after hatching, rather than something is must develop through aging.
When a Pokemon evolves, it doesn't reset all its experience, or forget all its moves, or reset its friendship level or affection with you. It's not 'born again'. Therefore, it's unreasonable to think a Pokemon's age would 'reset' when it evolves. It's still the same creature.
