With Super AI will there be any challenges our puny brains can tackle that we can't simply put an AI agent on? There will probably be a long period of time where human-AI interfaces are the optimal means of tackling science but at some point the AIs of the future will eclipse what we can do.
Unless I
become an AI of course. And even if I don't, I don't always do things because I have to. I do many things because I
like doing them.
If I had a near infinite lifespan, god-like powers, and nothing better to do, I'd probably go find an unoccupied corner of the galaxy and start building a dyson sphere or another type of megastructure. There are many interesting projects that even an AI would probably find daunting, and there are many of these projects that I would enjoy taking on.
Unless we find ways to travel beyond light speed. Space exploration is going to be limited to telescopes for some time to come.
Again, if I have a near infinite lifespan I don't have to worry much about timescale. I can go out on a ship traveling at near light speed and take a few thousand years to get where I want to go. It doesn't matter much to me, since I'll be asleep for most of the time. (And when I'm not, I'll be doing something, not just standing around and waiting.)
In the long term, will food be necessary? You will mostly be synthetic. Think replacement parts and upgrades rather than messy biofuels.
Not necessary, perhaps, but necessary and interesting are two different things. I can eat things that are new or that taste good, even if I don't have to do so to survive.
Just pointing out the merit behind a few of these applications. I agree on most of your points though.