You might find it hard to believe, but there are quite a few instances where you might end up needing to call in a tow truck. Cars, at the end of the day, are machines, and machines can run into quite a few problems, and in order to deal with a possible roadside emergency or mishap, you will need to make use of a towing service since they offer roadside assistance.
One scenario where you might need a tow truck service is when your car stops responding in the middle of the road. It could be a problem with the engine or any other part of it, but one thing is certain, and that is the fact that your car is not going to be able to go anywhere by itself for the time being. This is when you will need a tow truck to come and tow your car away from the roadside and to a mechanic so that you can get it fixed.
Similarly, if you have locked yourself out of your car and are unable to get access to your car, you will need a tow truck to take your car to a locksmith or to your home. However, some tow truck companies offer emergency locksmith services as well, so they can probably deal with the problem themselves, sometimes even onsite, helping you get back to your routine without wasting too much time.
Another situation where you need a tow truck company is when there has been an accident, and your car is either too damaged or risky to drive, or you feel that you are too shaken or physically compromised to drive. This is when you will definitely need to call a tow truck to tow your car away either to your house or to a mechanic depending on what you ask for.