River of life..., Why is using your OWN blood taboo? Options

Lets face it, blood is one of the most metaphysically powerful substances a witch has access to. And it is HERS (or his). So what is the hysteria that is so prevailent these days about using your OWN blood in rituals to add power to it. i can see in the old days when witchcraft was first struggling to come back and gain acceptance and they wanted to seem as bunny fluff as possible so that there would be no violent reprecussions. But we are past that stage now. i understand that wiccans don't want anyone to think that their Godess demands blood, but i am talking about witches. Blood freely and joyfully given is a powerful tool and i think it is a shame that we are letting fear ruin it for us. Now i know that it is a touchy subject for alot of people so, please, lets keep this as a friendly discussion. Thanks all

i wonder what these lancets are called in dutch, i think the local pharmacy won't know what to give me if i ask for a lancet in English.

Blood is a gateway substance. It opens paths to other realms. It can be used to put the mind in the right mood if one is focused on obtaining such a mood.
At least that is what i think.