Multichannel can be really fun if you have the right setup. I don't use a crappy receiver - I use an Oppo BDP-105 outputting multichannel analog into a Marantz pre-pro set at pure analog and then XLR out to good amps. The sound is quite good...doesn't replace stereo but it's very good.
The main issue is lack of discrete multichannel material. You need a large collection of SACDs, DVD-A, Blu-Rays...and I also have about 500 SQ and DTS surround discs from the 70s and 80s. So, maybe 1000 possible surround choices.
I still mostly listen to stereo, but the multichannel stuff is very fun.