1. I asked a question first. If you desire answers to your questions it would be polite to provide answers to mine. Thus I reiterate: Demonstrate your proposed evil force exists and that it is warring with a god who permitted that evil force to exist in the first place when he did not have to.

2. I don't know if there are other lifetimes or not. No one has ever presented falsifiable evidence to me that such lives exist beyond impotent personal testimony from ancient books written by people who didn't even know basic maths. Perhaps they passed for intelligent in their time, but in this time that's called illiteracy and I have no ethical imperative to accept the rambling of illiterates who have not made the effort to demonstrate a basic level of personal intellectual competence.

3. Your question suggests an appeal to extremes. There is no requirement for gods or afterlifes to have hope in an uncaring universe. That is called nihilism and it's what petulant rebellious teenagers do to piss off mom and dad.

To answer your question bluntly, I am what I do. Nothing more. Nothing less. I am not my intentions. I am not my beliefs. Un-acted upon, intentions are valueless no matter how "nice" they may be. Chance plays a bigger role in everything than most people are comfortable with, even to the point many refuse to acknowledge it's even a thing because the philosophical and practical implications are discouraging. Never the less, the hope in my day, at least the amount of it I can realistically bank upon without having to rely on sickly lotteries, is entirely a product of the behaviors of myself and other people. "All we are" can be an awful lot if you are putting the right amount of effort in the right places.

There was once a man who was tired of being a patent clerk and decided to figure out what light was. In the process of trying to understand this phenomenon he discovered something about the nature of the universe and figured out how to express that discovery mathematically to such an exacting degree of accuracy that it made predictions that turned out to be true. In fact, were it not for this man's discovery that time is relative to motion, the orbiting satellites which have made it possible for you and me to have this debate would not exist! It would not be possible to get the timing of the signals bounced off of it if you did not understand that time is different for the satellite than it is for you and me solely because it is moving at such a remarkable speed.

Thank god? No. Thank Einstein. He was a genius in the truest sense of the word, a real life mutant who's cognitive tools were well better than probably any of ours could ever hope to be. But none of that would have mattered had Einstein not been unsatisfied with his lot in the office and had he not made an attempt at something. He isn't great because of what he was born with. The story of the genius who never tried is as common as sand. He is great because of what he did.

And like him, I will only be what I do. Therefore I'd damn well better do well. There is profound purpose in what I chose to set my hands and mind to, even though I'll almost certainly never impact the world the way Einstein did. I will impact my children MORE than he. I will impact those who love me more than he.

There is incredible potential in every day entirely divorced from the existence, or non existence, of any deity or after life. Those things impact the urgency of life only, not the nature of it. If you have no hope without the existence of a god and without the existence of inherent, built-in purpose, then that was your choice, and your choice alone.

The good news about that is today is a new day and you are free to make better choices if you wish.