Yellow is one of the greatest colours - and my favourite one. It is a bright colour symbolising hope, optimism, and a brighter future. Many flowers have the colour yellow, bees are yellow. When you imagine a plentiful field, you don't think on some sort of green grass, you imagine the yellow wheat, or in a flowerbed, not the colour green, but a field of yellow sunflowers or other flowers.
Furthermore, the colour yellow is just appealing. The Sun is yellow, and its so bright we can't look at it. Virtue of that alone is proof yellow is one of the greatest colours. I have no hate or ill intent to the original poster, but I think their opinions can be substantially better if theirs was "I like the colour yellow." over "I don't like the colour yellow".