Calling people psychotic for allowing Pokemon to grow stronger and add to their Pokedex? I would be calling you pitiful for that by now. Keeping it as a Sprigatito doesn't really do anything except let it be known as a weak mark. People never show pity for something if it's cute and small, but use that as an advantage because smaller things typically have less kinds of moves and lower stats, no matter the level, especially first-evolutions. People tend to be merciless on battles, making cuteness only a cosmetic. It's simply just the way.