SPIDER GAMEFARM: “According to my friends why i dont have Sweaters. Me: i have my Hatch, I have my Roundhea…”

According to my friends why i dont have Sweaters. Me: i have my Hatch, I have my Roundheads, I have my Kelsos, why do I need Sweaters when they can strike like Sweater but they are deadly than Sweaters. What else do I look for?