The "happiest" possible "immortal" universe? I do pose this question almost in sillyness, but sometimes you want to sate your passing curiosity. The end-all-be-all future(s) of the universe is(are) not a very "happy" one for life if life somehow manages to hang in there for a while (heat death, big rip, all such "nasty" things). Because of our friend, entropy, we don't seem to have much hope either. My question then is-- are there any somewhat compelling theories of cosmology that might allow for the perpetuation of life by some means?