What makes you think we won't cure them? Cancer I think will definitely be cured in 30 years. I haven't been following heart disease so much but chances are we will have huge health breakthroughs by 30 years. I would put my money on there being new/different diseases that kill us in 30 years.
In theory, couldn't a lot of heart disease (if not more general cardiovascular diseases) be addressed by figuring out how to affordably grow new hearts from tissue? I understand that's not something we're capable of doing right now but from my (largely ignorant) perspective, it seems like the issue is "hearts break down over time". The heart is essentially a mechanical part, and unlike neurological systems, there's no qualitative difference between one heart and another aside from how well it pumps blood. When you have a mechanical part that wears out, you replace it. Artificial hearts have issues stemming from the fact that they aren't 1:1 replacements for human hearts but if you could grow a new heart from a person's cells and get to a point where doing so is relatively affordable, could you not swap out an old heart the way you'd swap out a fuel pump that's wearing out?
Compared to stuff like cancer, I feel like replacing hearts is more an issue of cost and engineering rather than developing entire new forms of treatment.
Well, today hearts are replaced by perfectly healthy hearts of other people and yet life expectancy after such a procedure is not great and patients have to take meds for as long as they live. Also cardiovascular performance is much reduced. So as long as this is not working really well, i guess growing hearts and replacing them is still a long way off.
Also there are other kinds of common cardiovascular disease like coronary heart disease which can't be fixed by replacing the heart.
