The blue-ness or yellow-ness of the light is called the “colour temperature”. So if you find bulbs that give a blue-ish light, it’s called “cool white”, because the light looks icy cold.
So if you only find cool blue-white lights for sale, it’s because someone thought you like them.
But maybe they don’t know that too much blue in your lights isn’t so good for you. So we think you should have a choice, which is why we’re introducing our 3500K Natural Soft White light bulbs!