Both SFO and SNA are premium-priced airports. They lack the significant WN factor.

When I look to fly to either the Bay Area or SoCal, both SFO and SNA are consistently much higher in price. Obviously, there are those that are willing to pay the premium or don't have a choice.

Unless it was for a same day trip and someone else was paying, I would balk at paying 3x the cost to fly into SNA. It's a no brainer.