Yeah, at early game stages they're great. At later game stages they quickly fall behind weapons that have a power attack that doesn't require you to click on a spear stuck in a zombie that's moving around. Don't get me wrong, they're still my favorite melee weapon but even having two or three on your hotbar doesn't make up for the deficiencies. I'm looking forward to A21 to see how they've been balanced but right now most of the other weapons out perform spears.