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Pretty good. Could you imagine living forever? I get tired of everything after awhile, and at some point I'd get tired of living, too. Imagine having to tread along for eternity knowing that it would never end...
One of the most soothing thoughts I've had involves the idea that what you experienced in the year 600 AD is what is to come after your death: absolutely nothing. Time folds in on itself to the unconscious mind, and seemingly a "microsecond" after your true death an eternity goes by. The only time you are conscious and thus aware of time is after that microsecond which, by the sheerest accident of luck, you cluelessly find yourself reliving another life elsewhere with no knowledge of anything before birth. It just so happens that after the billions and billions of years before you, you happen to be living "now". Technically, you'll always be living "now", only in different life forms, since time is meaningless when a life-form is not being lived.
When you hear of people saying they're afraid of "eternal darkness", what they're alternatively saying is that they are afraid of eternal time. It makes you wonder why they are seeking a cure for cancer and all possible ailments, when a lack of anything to ail you will in theory create the eternal time they fear.