The legality of this is questionable. Your position seems to be that you think the license comes into force when the user uses the item, whether or not he/she has read the text. This cannot be the case, or all sorts of stupid scams would be possible, along the lines of the jokes posted above. They are not jokes. If your EULA has legal force, so would the jokes have. In practice, neither have legal force. I don't agree to anything just because you tell me I do. The only thing that has legal force in this case is ordinary copyright law. As it happens, all your terms are already covered by copyright law, so your "license" is unecessary. I suggest you get rid of it.