Considering that you could open a typical 1980s/90s car with a coat hanger and the could be hotwired in about 10 seconds by someone who knew how, I don't think we are really any worse off.
I think though were are going mad on unnecessarily insecure wireless technology just because it's cool looking. I can't really see the great advantage of keyless ignition. At least when you have to insert a key or fob you know where your keys are!