USA Rare Earth has been on a roller-coaster ride in 2025, which is a warning sign that investors need to tread with caution.Wall Street is a voting machine in the short term and a weighing machine over the long term, and emotions can lead investors to make questionable choices on a day-to-day basis. That's the backstory that you need to keep in mind if you are considering buying USA Rare Earth (USAR +2.98%).Here's why this company's story is so exciting and why the smartest move could still be to watch this ...