Okay, it is easy to see why some religions (and many non-affiliated individuals) eschew (as in do not chew) any meat or fish/shellfish or other animal products as many adhere to the principles of ovo/lacto vegetarianism. However, there is one religion whose strict adherents make the other religions' dietary practices look like cannibalism.
You see, strict followers of Jainism, (an ancient non-violence praticing religion based in India), transcend ovo/lacto vegetarianism to higher levels of respect/harmony with nature as they aspire to maintain a cooperative coexistence with all living beings. Believing that roots and some fruits contain living beings, they abstain from eating them. Consequently, foods like potatoes, yams, carrots, onions, garlic, figs and honey are prohibited from being consumed.
As a lifelong addict of vegetable and fruit carbohydrates (to the extent that multiple times per day I religiously, compulsively and fervently recite a mantra of "one potato, two potato, three potato, four potato, five potato, six potato, seven potato, more..."), based solely on its dietary restrictions, Jainism is at the apex of the religious dietary restriction hierarchy that I would never consider being a follower of.
Thus I will never be a Jain, plain or otherwise.
(Talk about a shaggy Jain story!)