Should I switch to synthetic oil or not?

Synthetic makes sense if you live in a polar climate. In Yellowknife synthetic flows instantly, even at 70 below zero. But with dino oil you listen to the lifters for a minute before the oil flows to the head.
Uber cold conditions like that would be the only reason I'd ever pay more to run a synthetic engine oil.
 
Asking this question is sort of like asking "Should I start taking a mult-vitamin?".

Sure, why not? The placebo effect is a powerful thing.