I thought I'd just add my own thoughts here, as an old person with chronic pain.
I'd like to live a bit longer, and might be lucky enough to do so. On the other hand, I might pop my clogs this weekend - I've got heart problems and many other deteriorating conditions that might just finish me off. If so, fine: I've had a decent life and couldn't complain.
But if not, I could be faced with a situation in which I want to end my life - if the pain gets too bad, or if one of the other things becomes so bad as to make me prefer not to hang on. Then, I'll just kill myself (I know how ...). That's fine, again, I think.
The one possibility that does scare me, though, is that I'll want to kill myself but am unable to do so, for some reason. I've seen this happen, to acquaintances and friends ... and also to someone I loved deeply. Horrifying. Awful. So I'd like to be able to ask my doctor and/or my children for help. Tough on them, sure, but in my personal experience not so tough as seeing one you love suffer so dreadfully and be unable legally to help.
Yes, I hope the proposed legislation manages safeguards for vulnerable ones, and to avoid possibilities of coercion and so on. But - baby and bathwater applies - mainly I hope it passes for selfish reasons, and on account of others like me. Why should we and our needs and autonomy - our free choice - be ignored just because of possibilities of abuse of others? Why do my wishes and clearly-worked-out choices count for less than their presumed welfare, however vulnerable and liable to abuse they may be?
Of course the whole thing needs careful safeguards. But, in the end, I do sincerely hope this country does what's so clearly right ... allow assisted suicide for people like me. It's time!