I've whined about this before because I think it is asinine. Honda, apparently, decided to save themselves a nickel or so per car by not installing a cheap, practically indestructible simple switch that has been and continues to be used on virtually every car from Kia's to Rolls Royce's. It is stupid and makes zero sense, but it is.
I noticed it a few months after getting my Accord and thought something was wrong. When I took my car in for its first service, I asked the tech about it and he said it was normal.
Why did they do it? Penny pinching. Is there anything we can do about it? Not really. It's on my very short list of annoying things about my car (which includes the window rubbing noise that eventually plagues every Accord stemming from saving a few pennies installing cheaper door and window seals, minimal sound deadening material use and the fact, no matter how silly, that car manufacturers seem to believe that the cruddy stereos that come stock will make customers happy so they make them impossible to swap out with out messing up the look of the car).
Phew! I feel a little better now.