Terrible question. Let me break it down. 1)"Everyone" worries about cells. First everyone doesnt or we wouldnt have legal abortion to begin with. 2)"collection of cells".. so are adults.. please speak like an adult, instead of downplaying the facts. An unborn human bieng is what we are dealing with. I could call you simply a collection of cells, which is accurate, so then can i kill you?... If your point is stage of development, that is a weak argument logically as well, due to the fact infants arent fully developed, the mentally impaired, certain diseases, etc etc.. We cannot then obviously put a value on life dependant upon its development or lack thereof. 3) How many pregnant mothers are in direct, life threatening situations in the event of giving birth? If the mothers life was directly threatened, that would be a decision made between her and her doctor... I dont think anyone would state she should be forced to die in order to give her child a chance at life. That was simply ignorant. Mental welfare? I dont feel we should kill a human because they might make someone depressed. Do you?