Of course, it could have been much worse. You didn't have an accident and didn't get hurt, and that's the main thing. And such accidents happen, and no one is immune to them.
You can read more info here about tire problems. Like other parts of the car, Rubber tires are subject to wear and tear. Moreover, let's consider the fact that they are directly contacting the car component's asphalt surface. The reasons for gradual destruction become obvious. If you follow all the recommendations, you will be able to use the tires for several seasons, significantly saving your car's maintenance budget.