So you have a great hi end stereo preamp, but

So why don’t avr and stereo worlds get along?

don’t play together well.

the world is changing. People who have avr’s have the capacity to appreciate stereo music.

Problem here is that you can’t achieve a high level of stereo SQ when stereo preamps and avr’s are in same system without a lot of addl operating costs and inconvenience.  These two worlds don’t like to share main speakers.  The world is evolving and soon avr’s and stereo preamps will have to play more nicely together.  For now, this relationship is troubled.  
Presently, stereo enthusiasts and home theatre users don’t enjoy working together.  I am a loyalist of both sides.

You hurt my feelings.  Time for some uplifting Barry Manilow youtube vids from my amazing ht system.