My depressions used to be really bad, always fundamentally existential and prompted a couple of suicide attempts. I've nearly died a few times and arguably all of these occasions contained a suicidal element but eh... I just don't want to go back to that place. I'm scared of it. I am mildly medicated now and just try not to let myself soar too high when I feel the upswing because I don't want to fall too far down into the inevitable blackness that follows. My last major crash occurred mid 2011 and I've literally been spending the entire past year trying to pick myself back up from the rubble. Ugh considering a life of more of these ups and downs is enough to make me feel suicidal tbh, though I doubt I'll be reaching a ripe old age anyway. I feel so defeated sometimes... But where there's life, there's hope and all that.
ETA: Yes I think there is meaning in everything, and yet I don't think that suffering needs to continue (which is why I always sought treatment in some form, or sought to end myself). But if one is suffering unavoidably, this certainly can be lessened to some extent by discovering meaning through it. Beyond a certain point though, nope. Catatonic depression is just a death and I truly don't know how many more rounds of that hell I could endure.