I'm making points that are valid for me. Tell me how you get the hood open for a jump start if your battery runs down. Now tell me how you do it if you're in remote Utah or Nevada with no cell coverage. Everyone I know who goes far afield has needed a jump at some point. It's easy to drain the battery when you're camping.
A couple of weeks ago I went to the local shopping center with my wife. In her car. I drove. I dropped her at the grocery and headed toward the other end of the center for kitty litter at the pet store. The car starts beeping at me in alarm because the fob was in my wife's purse. I had a choice between parking by the pet store and making my wife walk an extra quarter mile and turning around, parking by the grocery, walking to the pet store, and carrying a 40lb bag of cat litter back. I opted for the workout because if Momma ain't happy, ain't nobody happy. Had the car an ignition key, there would have been no problem. And no, I'm not about to carry a fob for my wife's car around with me. I've got enough crap in my pockets as it is and I only drive it a couple times per month.
Get out of your truck with it running sometime. It gets all excited, doesn't it? So turn off the double honk. Now it's really easy to walk away without shutting it down. A friend of mine left his Toyota running all day once when I rode with him. Ooops.
So that's three. Your turn. Tell me something good about the button other than not having to stick your hand into your pocket a little more often.