After 2 years exclusively on my SS, I demoed a $5k full squish Giant at B St. last week ... I was totally lost with gears, not to mention the suspension. I think I might want gears when I do some bikepacking... ..maybe in a few years when I'm 40.
To answer the OP - SS is cool on group rides. When solo it hurts, makes you stronger faster, and brings you closer to god.