You're right. I don't think I physically can until I exhaust every option and explore everything that might make my life slightly better, but right now? I would pussy out at the last minute.
I always think of it as if I have crashed into a lake and the car is filling up with water (assuming I don't want to drown): you can't open the doors straight away, because the pressure outside the car is greater than that inside the car, so you can't "open the door" (kill yourself). You have to wait until the car has fully filled up with water so that you can open the door because the pressure has equalised. You also can't stay in the car any longer, or you'd drown. Trying to break the glass will likely just leave you injured and there's no point in struggling before the car has completely filled up, because you're just wasting energy. It's better to just sit there for however long it takes because no one is coming to save you.