One excuse people use for using their credit cards is for the rewards. Many credit cards offer airline miles, hotel stays and other rewards for signing up for a credit card and using it. This can work in your favor if you are able to pay off the balance each month. If you carry a balance, the amount you pay in interest and finance charges may negate the amount of the rewards.
I have heard of instances where people charged $30,000 on their credit cards to get free airline tickets to Paris, etc. Their response was they wouldn’t be able to afford to go otherwise. But chances are, they are carrying a balance on their credit cards.
If you are responsible with your credit cards, there may be a way to fly for free. Credit card churning is when you apply for a credit card that is offering frequent flyer miles and cancel the card once you have used it. Some people do this over multiple times to get numerous airline miles. As stated in the article, this is only advised if you are able to pay off the balance each month.