While most view reincarnation as a magical, unbelievable, and an ignorant wet dream for those who fear death, I choose to view it as a real part of life, though maybe not in the way you may be thinking. After many months of obsessing over the terror of existence, and huffing paint thinner, I think I've finally found the key. Reincarnation is real, even if our consciousness and bodies will die and rot. Also karma is just a game mechanic and nothing more, you're not gonna come back as a toad because of your lack of manners. Besides, all the toads I've met personally have been real gentlemen.
Our DNA (or whatever our essence of life may be beyond that) will always live on and evolve, our true essence will continue to live on Earth no matter what happens to our current form. When we die, we will spread to the dirt, the grass, trees, bugs, etc. We may even be human again, eventually. Or whatever sentient creature may inhabit the earth. As our DNA continues to live on, it will naturally evolve and change, as with all things.