There's actually a certification for Solo Diver? Holy crap, what's next, a certification to wear split fins? Phucking ludacrous.
I meet people constantly who have 20 differt C-Card and they are morons in the water.
Anyway, Solo vs. Buddy has no bearing on this. Blanket statements like "you're an idiot if...." is just stupid. For the 5th time this week: What works for you doesn't mean it's the only way. It doesn't even mean it's the best way.
Not so bad, Cap'n, the Solo Class makes you think about a lot of things one tends to take for granted. For instance, I know I ignored the stuff in OW about blowing hoses. Taking the Solo class reiterated it and it came in handy. Just "round the world, think of this because you won't have a buddy". It made (makes) me think a lot more in keeping situational awareness, and doubly making sure I have backup-backups.
Besides, in today's litigious society, ops are more likely to let you dive solo when you have a cert - it covers their butt.