Why do we need BitLocker?

Why do we even need BitLocker in today's digital age? With the increasing prevalence of cyber threats and data breaches, shouldn't we already have robust security measures in place to protect our sensitive information? Could you elaborate on the specific benefits that BitLocker offers, and why it's crucial for individuals and organizations alike to adopt this encryption technology? Additionally, what are some potential drawbacks or limitations of using BitLocker that we should be aware of?