Peter Boiter Woods
Favorite Answer
They are bad videos, they are not what the title indicated, or they have objectionable content. There are also videos that are pure opinion, so the opposite opinion gives it a dislike.
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because they suck?
not sure if you just don't know what "dislike" means, or you are asking for some deep philosophical abstract meaning behind it.
people are generally pretty shallow. if they like something, they thumbs up. if they don't like it, they thumbs down...