So being ignorant of the risks means that you are not culpable? Life is ALWAYS risky, and no one ever takes the decision with the least risk (and if we did, nothing would ever get done). You may believe life is sacred, but you are also willing to risk death (even if statistically small) to do things in life that you think are important, even if doing those things may lead to a slightly increased chance of death for you and those around you. Are you educated to the maximum extent possible on the food you eat and feed others, such that you are creating the minimum health risk possible? (Apply to numerous other routine tasks in life.)
I guarantee that you and your children (if you have them) will die earlier than necessary due at least in part to some choices you have made. Life being infinitely sacred is a platitude, since every one of us willfully risks the life of ourselves and others for perceived short-term benefits. I will agree that life is valuable, but nobody actually acts as though it doesn't have a very finite value despite what they may say.