Indulgence for pure gratification of self and no other purpose is what is unhealthy. Suffering breeds strength; indulgence breeds weakness.
aldo, are you in the wrong thread?

Ghostavo, in my earlier post, I was referring to having one egg cell or one sperm cell sitting by itself. Alone, neither of these things will do anything more than just float/swim around. However, take a fertilized egg
in utero, leave it alone for nine months, and you have a baby. That's the key difference. Also, what is up with some of these utterly ridiculous arguments about women being arrested for not having sex while ovulating, or for people being arrested for masturbation? This has nothing to do with the current argument and is laughably absurd. Most noably of these is the notion of what one's intention is. When a woman has an abortion, she's willingly and knowingly ending some type of life, whether you consider it to be human or not. Does a woman have similar control (by natural means) over the menstrual cycle? Of course not; don't be ridiculous. Ovulation is just a natural bodily function; it can no more be controlled or directed than one's nose can from running. As for masturbation, that has to do with one's personal beliefs. At any rate, in either case, the type of cell in question is incapable of developing into a fully functional human being on its own. This is not true with the fertilized egg. It will develop into a baby without any outside interference; willfully doing anything to halt this development is an abortion and prevents this life from being realized. That's murder in my book, at least.
One more thing: arguments about imposing religious beliefs on others don't hold up here. Many atheists are pro-life; the issue goes beyond religious convictions or even moral issues. The main issue is the consideration of a human, at any stage of development, from conception until natural death, of being worthy of protection and the right to live unmolested. This is why I and many others work to get abortion outlawed; we see this as murder, and we wish to stop it.