The Spots want to kill you too you know! Once they've tired you out they just use your body to get more power, and to make more Spots.

[It's not like Spots really die anyway, they just sort of... Sink into the floor. But still, the point is it's better to get rid of them.]

And you can't just fight a Spot off so it leaves you alone, they'll keep attacking you unless you defeat them or you run for it!