rock smash is an odd hm, being low power, but good type and high chance to lower opponents defense. It's still not worth putting on a good pokemon, but it has a niche in giving m slaves a way to hit rock types. Don't give it to very many mons, though, as it's not that great.
Why so little love for gen 2 starters? everyone complains about gen v, but i have hardly heard mention of the alligator with a move to hit anything SE, a green dino that provides a tank in a game series flooded in game with glass cannons, and a volcanic badger that essentially gets 100% accurate, no recharge, hit both foes but not ally blast burn BY LEVEL UP.