Ok well if it's a conversation about social justice and the future of equality and all the good things we can strive for, I'll bite and accept that it would be grand for all humans to live forever, zooming through the stars in benevolent brotherhood and sisterhood.
For now, humans continue to exploit their environment and each other for personal gain. Our history does not indicate a drastic shift in this trajectory any time soon. If we can actually learn to live in love, then maybe you're right. I am confident in my opinion that we're too immature, collectively, to even consider immortality as having a generally beneficial effect on our species.

We are not talking about anti aging or nootropics, or telomeres... we're talking about immortality. That would be the literal end of humanity. Do you think this new gift, if achieved, would be equally shared among all people? Or just the influential or wealthy? We both know the answer because it's rhetorical question. Now those lives that are not eternal, based on our history, would end up serving to sustain those lucky few who will never know a natural death. Count me out.

Nope, my life is comfy. But suffering is an inherent aspect of existence. Imagining you can "see fit" to control if and when your life ends doesn't align with how reality functions. I would argue that the only thing that gives life itself meaning is the fact that it has a termination point. What's the point of getting out of bed when there is always an eternal stretch of tomorrows to 'look forward to' ? I've never known an old timer who did not accept their passing with open arms when their time came. I'm just not interested in participating in an imaginary pursuit of everlasting life. The tree of everlasting life bore the other forbidden fruit in the garden of eden...Adam and Eve never ate from that tree. Even our mythology warns against this pursuit. The pursuit to end human death and suffering will only result in more suffering.

Seriously. Thank God we die!

I don't think it's dark at all. It's just rational. I'm not looking forward to it, but I accept it as inevitable. Life in perpetuity? That's unnatural.

Eternal life = eternal suffering. I, for one, find my inevitable demise comforting.