I got a juicer once. two points:
A, they are a royal pain to clean
B, Vegetable juice tastes even worse than it sounds.
Yes, they are a pain to clean, but if the juice is important enough for you, it's worth it. The number one rule for cleaning juicers is to clean it right away, while the waste is still wet. I make a point to clean the juicer before I drink the juice.
As far as vegetable juice goes, I love carrot - celery juice. It's a tasty juice and very healthy. It's liquid nutrition. Granted it's sweet, and I have yet to develop a taste for other vegetable juices.