You're kind of preaching to the choir here I'm afraid. We're big fans of the importance of integration on The Nexus. There is even a stickied topic somewhere that aims to provide help to people struggling with it.
I personally feel as though integration is key, although sometimes we stress it to the point that it can be a source of anxiety. I remember having a rough mushroom trip a few weeks back and in the hours afterwards, I was exhausted and anxious, struggling to integrate it because "I had to."
Finally, I gave up for the night and it caused me great suffering. A few days went by, I refound my footing and lo-and-behold, the process of integration started to happen on it's own.
Not integrating is bad, but it's also not something you can force, really.
Blessings
~ND
"There are many paths up the same mountain."