&gt; we input so much energy into sustaining our meat habit<p>Well, the energy alone wouldn&#x27;t really be a problem if we were using green energy. The Sun provides more than enough energy for all sorts of human endeavours. At the same time, I absolutely agree that much of the current production and delivery system, food and otherwise, is inefficient. Efficiency is an important matter, but alone it&#x27;s probably not enough to curb global warming in the <i>long run</i>, especially not if the population keeps growing.<p>As you might have guessed, I eat meat. The funny thing is, I don&#x27;t do it for taste reasons. I do it because it&#x27;s cheap protein that works well with my digestive system. For some reason, I can&#x27;t consume more than 15g fibre per day without problems, and I&#x27;ve tried for months at a time before to see if I would simply adjust, but that didn&#x27;t happen. If there were <i>affordable</i>, <i>safe</i> (no mercury or other contaminants), and <i>quick-to-prepare</i> plant-based food that went well with my body, I would certainly be on it. So far I haven&#x27;t found such a thing. One of the most peculiar aspects of all this is that I constantly hear about how efficient plant-based foods are supposed to be in terms of production, yet plant based protein (without high fibre) is never cheap. It&#x27;s always more expensive than meat&#x2F;egg&#x2F;milk based protein. How is it that plants are so expensive when they&#x27;re supposed to be so efficient? Without that efficiency being seen by the consumer, it&#x27;s unreasonable to expect everyone to switch.<p>On the topic of changes in the system, I personally would prefer the government-based approach where essential technologies for green energy were at least subsidised enough that they were on-par with fossil fuels. The problem is that companies might take advantage of the subsidies to increase their own profit margin, which is why I suggested that the production be <i>fully socialised</i>, so that profit doesn&#x27;t get placed at higher priority than the environment. Moreover, there would be no unreasonable burden on individuals, as would be the case to expect everyone to simply buy a Tesla.