I can appreciate these feelings, just as, I'm sure, you can appreciate how many people turn to religion based on these feelings, rather than an unbiased assessment of the available evidence. Bottom line is, the universe doesn't care about you and in some hundred years, almost all memory of you will be gone. The sooner you come to terms with this, the sooner you can take advantage of the time you have. Because the fact that you are here, a living, thinking animal is remarkable. And you are living in a great timeline, where most people have enough time to truly enjoy their years.