What's the point of constantly fighting and struggling when it's obvious you weren't meant for life?

What if you were just destined to be a failure at life and was not even supposed to be born in the first place? No matter what I do I can't seem to stay afloat in the unrelenting ocean that is life. I have no one, family or friends, and recently been fired. I know I am not resourceful enough to bounce back from being homeless. I couldn't even make use of the opportunities that I was given, there is no way I can survive the streets. Wouldn't suicide be justified in this case? If I wasn't such a coward I wouldn't be wasting my time or your time in making you read this pathetic story. Sorry.