While I can't speak for you, I have found that life always gets better... it just has to get worse before it does.
There is an ebb and flow that goes with depression. It is never worth it when we are blinded by the pain, fatigue, anger and helplessness.
And then, the sun comes out. The weather gets warmer. Your dog does something ridiculous... and you crack a smile when there is nothing to smile about.
Please, hang in there. Don't give up. If you feel like you are sinking... float on your back for a while. Take a breather, and start swimming when you get your energy back. It is worth it. Fight and endure. You are worth it.