I'm a vegan. I have not yet considered fully whether or not the beliefs behind it, and this specific course of action based upon those beliefs, are rational.
It seems to me that it would be against my personal morals to assume that I have the right to enslave or take effort from a creature whose intelligence I cannot, at present, measure or determine. I'm not sure if intelligence should be the basis for this decision.
From what I've seen and read of the meat industry, it does seem that this specific industry and way of doing things is one I wish to avoid partaking in as much as possible.
I'd very much like to hear from people who have considered this issue rationally and indepth, as it is one that is very difficult, for me at least, to discuss without bias.
To add; for me, health is a lower priority to the concerns mentioned above (to a certain extent; I'm okay with operating at less than optimum health, not okay with actually dying), though I do aim for health within the constraints decided on by higher-priority choices.
I have noticed that among philosophers, vegetarianism of one form or another is quite common. In fact, I became a vegetarian (technically a pescetarian) myself partly out of respect for an undergraduate philosophy professor. I am interested in finding out if there is a similar disproportion in the Less Wrong community.
I didn't request that this go into Yvain's survey because I want more information than just what animal products you do or don't eat; I'd also like to see nuances of the reasons behind your diet. There are a lot more shades than carnivore/vegetarian/vegan - if you want to be a vegetarian but are allergic to soy and gluten, that's a compelling reason to diversify protein sources, for instance. I'd also like to hear about if you avoid any plant foods (if you think they're farmed in a way that's environmentally destructive or that hurts people or if you have warm fuzzy feelings for plants, maybe). Here are some questions that come to mind: