Often families of the departed find it difficult to accept that their relative could take their own life. The reason we have a taboo against suicide is that we believe that it indicates cowardice-taking the easy way out- when in fact it is more about an inability to endure the pain of being alive any longer. We forgive people who kill themselves to end physical pain, yet not mental distress.
We should never be judgemental, because those left alive cannot feel or even imagine how people who commit suicide really feel.
These days, with greater care and awareness about the condition most people do not end up killing themselves as a result of depression. But if they do there should be no more reproof attached than to the victims of terminal cancer.