Well, it's like any law or rule, you catch some, you miss some.Not saying it shouldn't be illegal but they make a mockery of the law when it's loosely or improportionally enforced...I'm sure plenty of people did commit the crime of taking some sand...ive never been to Hawaii but find it hard to believe they search people for sand when leaving and I'm also sure NONE of them paid $100,000. It leads to a lack of respect of other laws if it isn't strictly enforced and they aren't going to charge anyone $100,000 so why write that specific amount into law?
It's like anything with rules or laws, some think the rules aren't for them.