I've been 1x on all my bikes for the last ~2 years.
30t 11-36 on the fattie, NW raceface ring with sram type 2 RD
34t Wolftooth dropstop ring up front and 11-36 on the Niner hardtail racer. Sram type 2 RD
30t 10-42 sram XO1 on the PunkAss
Narrow/wide coupled with a clutch RD and proper chain length and you'll rarely drop a chain.
Haven't wished for more gears on both the top and bottom ends of any of my drivetrains.
Front derailleurs are dead to me.
Silent bike, less maintenance, and less weight / components to be worries about.
1-by for the mutha f'n win
"ya, well...that's like...your...opinion. man."