Hating is a heavy weight to carry around, all day, every day, as is fear, as is self-recrimination. They cloud everything, even to the point of watering down even the best experiences in your life so that the joy those experiences should bring become not much more than mediocre, and that's no way to live.
If you're like me, you've already experienced some of the difficulties associated with aging: weird moles, sagging everything, the death of people you love. I've been comforted by the fact that, any day now, I will wake up bathed in the glow of wisdom that is supposed to be the payoff for all this crap. Instead, I seem to be getting dumber.