Why is it so difficult to retrieve information from long-term memory?

Retrieving information from long-term memory can be challenging due to various factors, including the strength of the memory trace, interference from similar memories, and the context in which the information was encoded. Memories may become less accessible over time if they are not frequently recalled or reinforced. Additionally, retrieval cues may be insufficient or mismatched with the original encoding context, making it harder to access the desired information.