Energy drinks aren't a good source-- there's lots of Taurine, sure, but the net effect of the drink acts as a diuretic. Chronic dehydration will subtract from life expectancy.

What if you drink water with it?

the wikipedia entry for taurine states that the human body can synthesize taurine from cysteine as well.

the wikipedia entry also says dietary taurine intake is rather low, considering the doses the main article talks about, about 40-400mg/day taurine intake.

see https://en.wikipedia.org/wiki/Taurine

No one has ever proven a direct causal relationship between (unprocessed) red meat consumption and poor health. The studies which purport to show a link are all low quality observational studies that suffer from the healthy subject effect and failed to control for some confounders. If there is a real effect it is very small, much less significant than total calorie intake.

Perhaps another example of us not really having a clue what's going on with biology, and how it's especially bad when this intersects with anything related with diet. Biology of aging is already extremely difficult, and that's just when we can try for separation of variables in studies of organisms such as yeast. Moving to mammals causes incredible challenges in determining molecular biology drivers, and trying for small molecules interventions beyond that typically causes far too much to be lost in translation. Diet just takes it a bit further by mixing a huge concoction of small molecules together and calls by a simple name, like 'egg'. So all in all, if you want to learn what's really going on, try learning the planarian or yeast cell biology literature first before moving on to these more complex systems in order to get a decent idea for how much weight they hold.