I guess it depends on what you're doing it for. If you're trying to lose weight then it is better to get a juicer to remove the fibers, but if you just want to have a healthy beverage than I don't think it's a big deal if you just do it in the blender. I chop up carrots really small and throw them in with some orange juice, really delicious. there are tons of good recipes out there if you google it.
Whenever I juice I feel like I am wasting money. I put in about 8 pounds of fresh organic fruits and veggies and get about 2 cups worth. Then I look at the grocery bill and feel ripped off. I much rather saute, roast, grill or eat them raw with food than to juice. I always feel I need to chew my food in order to feel full. Because drinking a smoothie never makes me feel satisfied. I guess as long as you are adding more veggies and fruit into your diet you are good to go.
i was very hesitant on juicig as welll.. but i feel so goood after i drink it.. i dont drink it all the time.. but i try to have a good juice in the morning before any meal. I feel it going through my entire body(especially the ginger and lemon combo).. itts kind of addicting. But its a bitch cleaning the juicer somedays.. and if i have no time, i dont do it..cause the cleaning process is another 10 minutes..i think it awesome though.. hope this helps ;)