The thing about butter is it is the lowest in casein (of all the dairy products). It is a fairly pure product for something that is "processed". I occasionally use butter but not often. I prefer bacon fat on my veggies. & I also like to sub coconut oil for butter.
& back to the topic for veggies. I think veggies are good but I also think that all veggies are not good for all people. The only veggies I eat are:
sweet potatoes, carrots, cabbages, kale, celery, lettuces (sometimes but I mostly just eat kale), cilantro, jicama, onions, garlic, chives and other fresh herbs, parsley, radishes, Broccoli, tomatoes (okay I know, not really a veggie) some squash, and a few others that I am sure I am forgetting about. oh, maybe fresh corn on the cob once a year, that is my limit for corn. I am Southern & I have even given up cornbread.
I think the following veggies are very unhealthy for me - so I do not eat them.
Spinach, bell peppers, cucumbers, eggplant, peas, hot peppers, and potatoes.
I just plain do not like cauliflower, brussel sprouts. asparagus, mustard greens, other cooked greens, turnips and beets. I am allergic to black pepper...
Unlike meat, I think not all veggies are equal...