For what it's worth, the Sun's expansion will only wipe out the planets in our solar system, and from what I understand, only up to Jupiter. Our galaxy is safe from our tiny, far-from-center Sun. As I mentioned before, I actually find some comfort in this sort of thing, because while it does mean that our good work will be removed from posterity in 5000 million years, it also means that our bad deeds will be. Neutral. If you think about it, there's even a good chance that the components of your art are created out of the sundered worlds and stars of other galaxies. I dunno, I find it comforting, but your mileage may vary.

If I followed my own advice, I'd be living my precious few decades to the utmost - oftentimes our own intelligence and capacity for selfindulgent introspection is our downfall in terms of happiness. You can wear yourself out with chicken and egg problems, or even those that have multiple causality problems, or you can, upon occasion, try to remember how nice it is to watch a good movie and have an IBC Root Beer.

Hang in there. We cynics have a vital role too.