No. Not all debt is bad debt. In fact, some debt can be positive. For example, buying an item like a television and paying it down quickly can help build credit. And credit is necessary for securing loans on big-ticket items like a house or a car. Believe it or not, paying down student loans can also help your credit score.
But when people budget poorly and overspend, debt can quickly accumulate and collect interest. In time, it can become difficult to dig out of the proverbial hole.
If you use credit, be careful about how you manage it to avoid falling behind in your payments. Many people max out credit cards and end up drowning in interest payments. For the best results, pay your balance in full each month.