(04-01-2013 04:49 PM)Aseptic Skeptic Wrote: Actually, that might be a decent question. Why don't we?
Lifespans have been getting longer with recent advances in diet and healthcare. That's not evolution, it's science. Our evolution seems to put us at a lifespan of around 40-50 years, more or less. Yet we share DNA with tortoises and even with trees. Why didn't we inherit some of their longevity as the species diverged.
I can work out a couple quick answers in my mind, which might not be entirely correct, but I find this to be an interesting question and, to me, much better than some other theist stupidity like the whole "Why don't we ever see a crocaduck?" question. At least this question is based on actual science rather than ignoring actual science.
I don't know about you, but now that you've said that I'm -very- disappointed I've never seen a crocaduck.