Challenging topic! Because we are talking about something none of us know anything about!! How many times have you died during your lifetime from attempting to take your life? And if you did have a near death experience, can you say that you experienced your death... fully?
Who determines that those who "made you" did it out of love? Out of wanting? An Ontario couple (Ontario is a province of Canada) were found guilty (happened fairly recently - last six months) of murder after their two children died from starvation (parents left them in a closet for too long... unfed, no water, etc., or whatever the story is. And it's not the first in this country!) And that your parents go through the "natural" process... lovemaking = offsprings - at some point, most likely, does not mean that you were wanted, desired, wished, or properly loved! You may be from a couple who want to have children, but they know NOTHING about raising children! You are totally screwed up! A crude example is someone I know who has a dog. She loves the dog, but will tie it up for the whole day (8AM-9PM) and not remember to leave water and food for the dog. Is that called taking care of the 'object' of her love properly?
Obviously, laws against suicide would only affect those who were 'unsuccessful" with their attempt. One would need to know how many deaths can be prevented from such laws. I strongly suspect that it discourages some, and therefore would be a good thing if avoiding death at all costs was the objective, irrespective of the quality of life. And the quality of life should not only be "living".
Otherwise, my position is based on the fact that you had no say in your coming into the world. Really, the question is, how may would chose to live if they knew beforehand what their life would be like? A seemingly unanswerable question, since we don't know! Think of all the violent deaths that occur every second: murder, disease, sickness, malnourishement, starvation, etc. Never mind those who suffer throughout their lives! Think of all those lives that live through... hell!: poverty, starvation, abuse, misfortune, etc.!
The other issue is this modern notion of euthanasia! If I would agree that you are allowed to take your life for whatever reason you have, irrespective of those who would "love" you, you should not be allowed to leave "killing you" to some one else than your self! Why would you have the privilege of living till you are "unfunctional", and graciously ask another person to "kill" you? The obvious argument to that is that there is someone who loves you so much that they would want you to be there for as long as possible, and to insure that, they are willing to inject the 'death ingredient' at an oppertune time.
I wish for you that you have someone in your life that loves you in such a way that leaving her/him/them is never an issue for you.