Don't think I can give up meat either, but we eat fish twice a week, mainly oily ones such as sardines, mackerel, salmon, and have a vegetarian meal once. Fortunately Mrs O is a good cook, and can prepare many international cuisines. Tagine is very flexible and tasty with or without meat, and yesterday we had a butternut squash and halloumi cheese bake.
We have a box of organic vegetables every week, and it comes with suggested recipes for the seasonal veg therein. We use otherwise uneaten veg by making soup for lunch.
We try to stick to organic meat and make good use of it. Just as my mother used to do, we generally have a roast at weekends, eat the remainder cold on Monday, and make a third meal if there's still some left over, such as shepherds or cottage pie, or spring rolls from pork.