Safety equipment- Everything really makes sense?

Hello So I often get my concerns when reading in the motor magazines so. There are so-called safety equipment developed and partly offered for expensive money their sense, at least I, can not quite understand. Example : lane hold assistant. What is that supposed to do? If this assistant registers, it can be already too late, or, then I am so inattentive or incompetent that it is advised from a further drive. If I sit at the wheel of a car, then then must I know one thing. Pay attention to traffic !! If I am tired, then don’t drive long distances and especially let the fingers of things distract you. Nothing can be so important that I turn down or sideways while driving and let the traffic out of sight, in order to then let me be reminded by such an assistant again. Or this new “parking aid”. Weia… someone has already driven behind a car whose driver after a parking gap, suitable for the system, has driven behind a car. If the system feels a parking space for enough big, then you could park yourself with a 7.5 tonner without any problems. If you think about how much money these developments devour and what they really bring in the end… Greetings Alpenfreund