This may lead to designs that are counter intuitive to pilots, increasing pilot workload and the opportunity for error. Older pilots have trouble accepting and learning to use automation, making them more prone to misusing it. There is a lack of function and interface standardization between automation systems, leading to increased training requirements, increased pilot workload, and poor pilot performance. Automation designers leave pilots to do the tasks that cannot be automated. The pilots are left with a set of poorly integrated tasks that are difficult to perform well.
Companies require pilots to use automation.
In some cases, such use is unsafe.