What happens if I turn off device encryption?

If I were to disable device encryption, could you explain in detail what consequences I might face? I understand that encryption is a vital security measure, but I'm curious about the potential implications of disabling it. Will my personal data become more vulnerable to unauthorized access? How does this affect the overall security of my device and the information stored within? I'm seeking clarity on the potential risks and how to best protect myself if I choose to proceed with disabling encryption.