In order to enjoy veggies you have to cut down on the amount of sugar (artificial and otherwise) you eat. When your body is used to eating super sweet candy, it won’t appreciate the more subtle sweetness and flavor of vegetables like red pepper slices or sugar snap peas.
The first and easiest thing to do is to cut out soda and other sweet drinks. Drink water or seltzer instead as much as possible. When you wean yourself off sweetened foods and drinks, vegetables to start to taste good. Not every vegetable of course, but many.
The importance of eating vegetables is not just in the vitamins but because of the fiber, enzymes and phyto-nutrients that you can’t get from other sources. Vegetables make meals much healthier and satisfying (you can fill up while keeping calories in check). Feel free to add butter and garlic if that’s what it takes – it’s still healthier than eating french fries.