I think they're very well thought out.
Imagine you are driving in winter with lots of road salt, lights on, washers come on - perfect. Who cares about dirtying the car when it's covered in crap.
Re squirting all over a clean car - why activate them in the first place? I don't even want to wet my windscreen after a wash and dry.
And I believe it is illegal to use wipers if it is not raining. If it's raining, back to it's dirty anyway...
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