As for the concern about basic rights, I fundamentally agree. For some people, perhaps, they will never get better and in those cases we should have a path to assisted suicide. In all cases, we should do our best to help suicidal people, who are ultimately suffering a lot. I don't think most people who are suicidal want to specifically die more than they want an end to their suffering, to which they see no realistic alternative other than death (which I assure you remains quite scary even when you're really depressed.) I think giving them an escape other than death is morally obligatory and humane, where it's possible.