Making milk using cows is incredibly inefficient from an energy inputs point of view. You have to grow crops which you feed to cows which then turn a tiny perc

Making milk using cows is incredibly inefficient from an energy inputs point of view. You have to grow crops which you feed to cows which then turn a tiny percentage of the input energy into usable food. As a result, it's possible that synthetic milk could be massively more efficient in terms of its climate impact. Not saying it necessary is right now, but it certainly could be. Methane emissions are also very important as pointed out by another commentor