Assisted suicide: For or against? Is it moral? Would you help a suffering person end their life if they needed your help to do it?

I think there is times and circumstances that may make it more humane to do it. If an animal was suffering and there was nothing that could be done, do we just sit back and watch them suffer days, weeks. Does not a human deserve the ability to die with a little dignity if there is no other way. If I was faced with no hope of getting better and suffering I would want to be able to decide what I wanted. ( I already have it in writing in case of an emergency)