Until computers are perfect, there most certainly will always be situations where the pilot had better know how to fly an airplane, as opposed to a computer.
I agree. However, the reliance on training and instrumentation comes from the realization that your "instincts" can fool you, and do so surreptitiously.
If you are interested,
"Appendix D. Human Factors" of the final report on PK-KKW makes for a sobering read.
http://www.dephub.go.id/knkt/ntsc_av...KW_Release.pdf