i don't think life is sacred, either. killing living things is absolutely impossible to get away from--even the strictest vegan causes holocaust-level animal death and torment in the production of vegetables and even walking down the street (which is why Jainists, vegan as fuck, will not walk anywhere without a little sweeper broom to clear as many bugs away as possible).
human life is different, i think. human life is also like 0.001% of all life on this planet, though, so i don't think it's accurate to claim a respect for the preservation of life in general if you're just talking about not murdering people.
and i'm not being critical of veg*nism--quite the opposite. i think it's much better and more noble than the "middle ground" that i think 90% of humans seem to exist in.