I agree with you Gordon. You are at liberty to claim your life as your own. In fact it is so your own and not anybody elses the idea of finding someone else to end it for you is IMHO contradictory.
Your life, you end it.
I've no plans to do so any time soon, but your point takes us from my view that, in principle, my life is my own and decisions about it are mine, to the arrangements that might apply should I choose to end it. First there is the basis of establishing that I am mentally competent to decide to end my life and, second, the choice of methods that are available for me to do so, and especially where I would then need to access the means of suicide and/or be dependent on others to carry out whatever means I decided on.
I don't think it is contradictory to ask for assistance to do something that I can reasonably decide I want done but can't do it for myself, in this case perhaps due to illness, but I also need to consider the roles of any others in terms of influence they may have over my initial decision to end my life, in agreeing (or not) that I am competent to decide to end my life and, of course, if I needed the involvement of others to carry it out.
I suspect these arrangements come in cans labelled 'Worms'.