Why is asymmetric encryption more secure than symmetric encryption?

Using private keys to decrypt a message makes asymmetric encryption more secure. Asymmetric encryption is slower than symmetric encryption. If the private key is lost, no one can decrypt the information. If a malicious user steals a private key, nothing can be done to prevent access to encrypted data. What is symmetric encryption?

How long is a symmetric encryption key?

In most cases, the typical length of a symmetric encryption key is either 128 or 256 bits. Since only a single key is used, it doesn't require lots of resources to encrypt the information either. All parties must share the encryption key to allow for data transfer, exposing symmetric encryption to key exhaustion problems.

Will quantum computing break asymmetric and symmetric encryption?

Long-term sustainability: In the future, quantum computing will break most asymmetric and symmetric approaches. You may read through this list and decide that the benefits far outweigh the risks. But if you decide that the risks are too great, you could use symmetric encryption instead.