1. It's boring, ok? Scarves seem to be neverending 2. It's tedious. If you want to turn someone off of knitting, have them knit a SCARF. 3. Limited learning. No decisions, no figuring things out, no asking questions. Sit quietly and knit FOREVER. Um, no, thanks. 4.You knit forever and likely NEVER wear it because everytime you pick it up to wear it, you remember how much you disliked knitting it. (This is, if you even finished it....) 5. BORING. That's all. You're welcome.