I use my credit card every day. I never carry a balance, though. I travel alot and use my cards for my job all the time. I have to rent cars and hotel rooms all the time. Plus, I like the perks and airline miles. They really add up. And I hate cash. Never have more than a ten spot on me at a time. And I shop online alot as well.
Credit cards are important for your credit ratings. Having had a good relationship with a card company throughout college enabled me to finance my first car on my own. It just takes discipline.