About 30 or 35 years ago, I was a vegetarian for a couple of years. It wasn't due to some notion of being nice to animals, it was because the problems went away about two days after I cut out meat at the suggestion of a Chinese woman I knew.
I was, I think, more of a practical vegetarian. I didn't entirely avoid meat, I just ate it rarely. I rarely ate beef or pork and didn't eat chicken very often. On the other hand, I ate a turkey sandwich about once a month and I ate fish about once a month.
After a couple of years, I gradually starting eating meat again the problems I had been having never returned. It was kind of strange how bad meats tasted after not having eaten them for a couple of years.
What I missed most was mustard -- there just wasn't much to use mustard for. Toward the end of my time as a vegetarian, I did realize that I could mix mustard with beans with good results.
One of my favorite meals was Vegetable Tempura with rice (most things went with rice). I loved this and would buy an apricot sauce at the store to dip the pieces of vegetable tempura in.
Another after a while was bean sandwiches. I would make some beans and smush them up to keep them from rolling around and smear them on a toasted whole wheat hamburger bun. Spread mustard over the beans and top with a thick onion slice and some alfalfa sprouts. Slip on the top of the bun and eat. I usually ate this with French fries.
There was a cafeteria about three miles from the house. I would go over there pretty often and get a salad, beans, another vegetable or two, a roll, and a piece of pie. I ate pretty well like that.
There was also a local Mexican restaurant where i would always order the chalupas with no cheese. These were basically a flat corn tortilla that had been fried with refried beans on it and topped with some salt, onions, tomato pieces, thinly sliced lettuce, and salsa, and with refried beans and fried rice on the side. The restaurant's kitchen was completely open to the front dining room -- after a bit when I walked in and sat down in the back dining room, they would bring out my chips, tea, and chalupas all at the same time. Life was good back then.
On occasion I would go to a local Chinese restaurant where there was no really good vegetarian options so I would usually order a chicken dish.
When I went to Subway, I would get either the turkey sandwich or a tuna sandwich.
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I'm thinking of going vegetarian again because I'm having trouble with meats again, but not the same issues I had years ago. Meats just don't taste that well to me now. I can't hardly taste beef at all. I can taste chicken and pork a little, but it doesn't necessarily taste right. The last couple of times I made tuna sandwiches, the flavors were really subdued. I can still get some flavor from salmon.
I think that for quite a while, when I have eaten meat, it was more about the spices and flavorings. For example, I still ate hamburgers up to about three months ago, but if the toppings were few and didn't cover the hamburger, it was nearly impossible to eat. I'm thinking of going to the local drug store lunch counter and try a hamburger again this Thursday for lunch or supper. They make the best hamburgers in the county.
I made some baked beans the other day and put a pretty good amount of bacon in it. I couldn't taste the bacon at all but the beans were fine.
So I'm seriously thinking about going back to being more or less a practical vegetarian. During my previous round, I didn't eat Indian food but I have learned to love it since then. So I'll cook and eat Indian food two or three times a week. I might even go back to my old practice from about 25 years ago of keeping a revolving Indian buffet going by fixing enough of an Indian dish to last about four or five meals and just dishing out a variety of Indian dishes and warming them up for each meal.
I'm also thinking about keeping a daily pot of beans of different recipes. Some baked beans, some charro beans, some more or less plain pinto beans, some bbq beans, ..., as well as field peas from time to time.