If you are going to use an analogy for comparing push button starts to any kind of coin-op game, you have to focus on the start process itself. "Turning the key" as a part of the driving experience would be compared to dropping a coin in for credits to begin play. So you'll have your traditional keys in one pocket and your roll of coins in the other.

Same with my Altima, it has a low battery indicator on dash. Be smart and pay attention and your battery won't die unexpectedly. If it does there is an emergency key in the FOB to get in...and the emergency override starting procedure.

Exactly.