Clash of egos!!! Break out the popcorn!
I do concur that years of experience might not make you a master...
But let's face it, a portrait's not all about bokeh.
Shooting at f1.2 on almost anything is sure you get you a nice bokeh but does that mean it's a great background for your subject? Think again.
At 1.2 your DOF is razor thin, making for a superb picture... if you want to show off your equipment.
The whole point behind a 1.2 lens is
1. Fast fast fast. It swallows light and gets you the shot under conditions most older camera's af can't even lock on.
2. Selective focus. You get to control the dof to a much greater extend than a comparatively slower lens. But do you really want that all the time? What good is a portrait when only the eyes are sharp and the rest is a creamy blur all the time? If that's your style then be my guest, I sure am not paying you to shoot for me.
Having an f1.2 lens doesn't mean you need to shoot at f1.2 all the time, but it does give you the option to should you see the need for it.
That's why people laugh at your question.
You probably know better, but it could be the way you phrased it that gave others the misconception.
Feel free to correct me if I'm wrong (be gentle please), but that's just my two cents.