Avoiding mountaintops is a good practice for cockpit crews. Avoiding mountaintop experiences with the Spirit of God is not!
After “mountaintop” spiritual experiences end what does not end is the deep heart-awareness that nothing is better than this. The believer is haunted by the memory of times of deep intimacy with God.
Sadly, the old temptations often return as we descend into the valley after our time on that mountaintop, but the knowledge that the pleasure of sin does not come close to what we were lifted into during such a blessed time does not completely leave us. It is hard to return to sin-induced hells of our own making afterwards.
We have known something (or, more accurately, Someone) surpassingly greater than whatever pleasure sin has given us in our life and this stays with us.
“Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places…” -Ephesians 1:3 (ESV)
