I take inspiration from other artists, but hardly ever copy them outright. There's nothing wrong with trying to emulate someone elses style to find your own. When I first started drawing way back when, all I did was try to draw anime and the like--because I loved how exaggerated the expressions were.
After I got over my obsession with anime, I started looking up some webcomics and tried to emulate their styles. Like Penny-Arcade, Goats, etc. Webcomics that strayed away from anime-esque drawings.
I think it's all about finding what you're comfortable with. Even now, I'm still trying to improve my style by taking elements from other peoples art and putting my own spin on it. ^_^