I'm for Euthanasia as well. I think it's important to let people decide when they have had enough of life, in most cases it is very cruel to make them live past that point.
I'm very grateful that my pets can have a nice death in the loving arms of family before any condition they get can cause them so much suffering and loss of quality of life. It would be lovely if I knew that I also had that option.
I know people have religious grounds for not allowing it, and while I respect the beliefs of others, I don't like it that religious beliefs have the power to dictate the policy for everyone. Surely if it was against your religion you would just have it in your living will that under no circumstances are you to be euthanised?
Its also the kind of thing that should be hard to achieve (maybe go to court to get permission to euthanise). I would hate for people to abuse the system to get their inheritances early from relatives that are in their care (with use of power of attorney, and other legal/medical decision making).
I also wanted to point out, in case I've mentioned things that have been brought up a lot, I haven't read much beyond the original post (I just wanted to stick my 2 cents in without too much bias).