I don't know, you might be surprised at how useful some of the crappy Pokemon are. I know I was. Woobat is probably one of the most useless Pokemon in existence, it's like Gamefreak took the Zubat line, pumped it full of weaksauce, said "LOL U STILL NOT SHIT ENOUGH" and gave it an ability that actually screws it over, and then just to add insult to injury, made it ugly to boot. But I found myself having to use one after Lenora and her damn Hypnosis-spamming Watchog wiped out almost my entire team, and now ole Swishy is one of my key fighters, providing useful resistances to psychic, fighting, ground, grass, and bug, and having actually quite decent stats for the mid-game. I'll probably have to bench him eventually as the enemies become stronger, but he's more than proved his worth, saving my hide a whole bunch of times and pulling through in battles where I was sure he was gonna bite the dust.