I think that you can count what you want. I think it depends on your goals. My main goal in calorie counting is to keep me accountable for what I eat. I might be able to do that if I didn't count veggies, but I don't think I could personally if I "forgot" to add up a lot of the bites, licks and takes that make up some days.
I've been surprised by how many calories are in a lot of fruits and veggies -- especially fruit! Watermelon has a fair number of calories - 1 cup about 60 calories -- and doesn't really take much work to eat. And a largish apple (8 oz) is over 100 calories. If there is such a thing as negative calorie foods, I don't think these would make the list.
If you don't count everything, then I think you need to be cautious in thinking you know exactly how many calories you are consuming. Veggies are typically low cal, so if you count that you eat, say, 1400 calories a day and eat another 100-150 in veggies then that's one thing. But if you're not counting hi cal oils you may easily be consuming 300-500 calories a day. And then you might wonder why you're not losing!
That said, there's nothing wrong with figuring out a system that works for you. Just be careful, especially with butter and oils.


