But pandemics would still exist and be spread. So your earlier comment was a tad exaggerated.
Are any pandemics caused by animal agriculture at all? If the answer is yes, and I believe that to be so, then surely it's better to have less of them, something that could be achieved by "the end of meat". I'm not sure which comment you are referring to but if anything I think I may have understated the negative effects animal agriculture rather than exaggerated it.
It isn't 'personal habit', that's whats wrong with that. And it ignores how such diseases are spread by human beings destroying much of the planet, especially its rainforests. Some of which is for meat,and some of which is for human sprawl, and all is for £$£$£$£$£$£$.
It is personal habits and choices which drive the economy. It's at the heart of peoples purchasing decisions and it is those decisions that create the "£$£$£$£$£$£$".
"Some of which is for meat"?
Now that really is an understatement, lets take a look at some of the numbers...
Now I suppose it depends on exactly what you mean by "human sprawl", but if we include total agriculture and built up areas in that definition, that accounts for 37% of the earths "habitable land", of which 29% is used for animal agriculture. Lord only knows how much land would be required to satisfy the current and future levels of demand if all the factory farmed animals were to be replaced by free range and grass fed animals.
It doesn't take a genius to see where some big savings can be made, and it's not just savings in land use, but also in the associated negative environmental impacts.
And considering the fact that you accept a vegan world is not imminently on the cards, then there are several more urgent actions that could be taken.
Hmmm, I'm not sure that I ever said or implied that I accept that at all. Things can change very quickly depending on circumstances, as the first half of 2020 has clearly demonstrated. I am not one for appealing to futility, and even though, on the face of it, the possibility of a "vegan world" seems unlikely, it's still worth advocating for, because it's the right thing to do imo. If history's brave pioneers gave up on "lost causes" like campaigning for women's rights or the end of slavery then we wouldn't have made progress in those areas, and those campaigns were also morally the right things to do.
I'm not sure what the "more urgent actions" are that you have in mind, but regardless, vegan advocacy addresses a good number of areas that are critical to our future on this planet, and I'd be willing to bet that they're not mutually exclusive with your "urgent actions".