but more than that it imposes on friends and family who need to cater to it (the list of non-vegan produce is truly a mine field - e.g. jelly babies, Guinness, soy sauce, which contain skin & bones, fish bladders and beetles respectively, although Guinness now do apparently claim to be vegan).
Actually, I prepare my own food. Me going vegan only meant less work for my housemates. As a vegan, especially one as strict as me, you should not expect others to cater to you. Instead you just need to cater to yourself.
Some still may not like that you eat your own food, but you have to have a spine. It is your life, and if you want to stop abusing animals, life sustainably, and be healthy, then you need to go for it. Do not forfeit good ethics to please those lacking in ethics. Rudeness is bringing harm to the environment and to innocent creatures for one's mere convenience.
This issue is a specific case of a general phenomenon, that being that altruistic people displease selfish people. For example, an honest friend annoys a liar because instead of covering lies he will berate. And a fair friend annoys a thief because instead of joining in theft he might return stolen goods. And likewise someone who eats vegan to spare the environment and to be just to non-human animals is a bother to people who live selfishly in this regard and are thus inconvenient by these ethics.
Would you become a thief to convenience a thief or become a liar to satisfy a liar? If not, then why become a carnist to please a carnist? You must do what is right, no matter how many wrongdoers it displeases.
BTW, I am not saying that carnists are bad people. I have been a carnist for most of my life. We all act unethical in certain regards. Good people do bad things. However carnism is unethical, the act, not the people, is something bad. We must face that truth. Animals are being tortured in literal concentration camps complete with small cages and gas houses and this is something which we ought to not even tolerate, let alone support. It really is time for people to wake up to this and make a stand against it. It takes humility to admit you were wrong, but it takes admitting that you were wrong to be right.