Many people don't see marijuana use as all that big of a problem. Many people just consider it to be a harmless recreational drug. However, despite the social acceptance of the drug, it is still illegal under the Utah and federal criminal codes. Therefore, people can face serious penalties for marijuana possession.
In fact, people can face charges for drug possession in a variety of situations. In other words, people don't just have to be caught using the drug to be convicted on these types of drug charges. Police have charged people after finding trace amounts of marijuana in a bag, for example. Or, people can face criminal charges if police find them with a friend's marijuana. In many cases, police aren't looking at intent, just possession. In some cases, police will intentionally bring higher charges -- such as possession with intent to sell -- in order to get people to plead guilty to lesser charges.