Where is progress halted in your opinion?

Consciousness/mind?

Basic cellular understanding?

Senescence?

You're getting at an answer, but I'm wondering why we haven't.

Adjacently sure I want to know why more people aren't working on it.

You have to really step back and consider that we live in a world where people pay rent, buy groceries, have jobs, believe in gods, and watch the news. We can do things. We do do things. We're choosing it this way. Is it so bad to wonder why not something else?

Especially when it comes to the one topic that affects us all, that we may be the only ones able to actually answer (in the entire Universe)?

This is amazing.

Yes, death prevention is a huge part of it!

And to your point - even if you solve something like consciousness, I could still be blown up and we wouldn't know how to build me back.

Humpty Dumpty out

I once read that we could in theory produce things like synthetic organs, but something like a synthetic liver would be the size of a 50,000 sqft factory requiring a full staff of chemists, would need a refinery complete with boilers, smokestacks, chemical waste facilities, and so-on for each individual person.

Think of kidney like a dialysis machine, or a heart like an advanced blood pump, lungs like aerators, muscles, bones - we can reverse-engineer most of it.

But there are still many mysteries in blood production, cellular function, digestion, hormones, genetics, and consciousness, to name a few areas.

It's humbling, we are at the very earliest stages of the biological sciences. But it's something nanotech and funding could chip away significantly at IMO in our lifetime, potentially solving many of the organ-related issues like diabetes, cirrhosis, cancer, and other things.