It seems to me that you delight in being wrong. Australian aboriginals worked, on average, 6 hours per day. Australian history is quite recent, this statement is not in dispute. I'm not trying to suggest that this was the case for any other hunter-gatherer society (I'm quite ignorant outside of this area), but the idea that Australian aboriginals had a relatively easy life is neither minority view nor controversial.
On the "life span" topic, you seem to indicate that people are uniformly dropping off in their 30's, which was simply not the case. You were quite likely to die in childhood (particularly infancy), but if you got through that, quite likely to creek on past 50. Why present this as if people are dying in their 30's, ground down by poor diet and harsh conditions? Simple nonsense.
How and when people died in pre-contact populations is pretty well established, and we can determine it from skeletons.
Ignoring your ridiculous attempts to paint me with various motivations or political leanings, this is about the only comment you have made that is not completely wrong. If you can be bothered to find the studies, you'll find that the life expectancy and general health of Australian aboriginals prior to colonization was better than that of the average European at the time. But never let bothersome facts get in the way of good uninformed diatribe.