Because of work reasons I often share meals with different people every other week or so (such as customers, etc.) More often than not, either by refusing food or simply because of the contents of my plate, people notice that I am vegan. This is of course not a problem but then the inevitable happens; People get curious about it and ask A LOT of questions.
In the worst cases, some people even take the opportunity to enumerate all the "reasons" why they think veganism is wrong.
This is not an easy conversation. I would really rather chat about something else than my dietary choices. I feel like living the vegan groundhog day.
How can I politely deflect this curiosity?