I am so sorry that you are feeling so sad but I think it is a great thing that not only are you coming to this forum for yourself, but you are also trying to make others feel better as well. That shows a strength that you need to keep feeding.

I would never want to add to your guilt, but you do need to think about what your life and death would mean to those you love and who love you back. Ideally, yes, you would care enough about yourself to want the help you need to go on with your life. If you aren't at that place yet- get there right away.
The devastation of a suicide permeates through families, friends, and communities with bottomless pain, regret, sadness, and guilt. I don't think you can even imagine it.
There are people dying everyday who have had no choice in this.. people with illnesses who have suffered and are having to leave a world they don't want to leave, leaving a wake of sadness behind. They would have given anything to have the choice that you do have.

You sound like a very caring, thoughtful person. Treat yourself the way you treat others, and build on your strengths. Keep posting on forums such as this, and see how much you have to offer. Your family and friends and the world need you. You have a purpose.