answer:The only real advantage is not having to dig your keys out of your purse. I have a push button car and it is convenient in a way, but too easy to screw it up or kill yourself. My MIL dropped off her husband at home and he had the key. The car kept running. She drove to her next destination, and once there realized she didn’t have her key! I guess she would have been able to turn off the car, but she would not having been able to start it again. Since she realized, she turned back around and drove all the way back home. She was pissed at her husband. Lol. Which is ridiculous. She was pissed for hours. My car beeps if the person with the key leaves the car. I’ve done this probably 5 times. Finally, this last time my husband said whoever is driving carries the car keys from now on. A friend of mine list two friends, a couple. The story goes they have a push button car, didn’t realize the car was still on when they parked in their garage and went inside for the evening. Eventually the house filled with carbon monoxide, and they were both found dead. If the car had required a key in the ignition that probably would not have happened.