Who positions their speakers straight ahead (zero tow in) and why.

@tomic601 Truth. It's as simple as that. See what you prefer. It varies by speaker, room size, and seating position.  

The toe-in angle can also be used to tone down brightness and correct the imbalance of two-channel sound caused by, for example, asymmetrical sides.

Crites speakers are wide.  It looks like more toe in than I really have. They are pointed at me intersecting behind my head.  Wall to Wall sound stage with good depth.

My Infinity RS-II were toed in towards my ears.

Reading this thread, I thought why not point them straight (no toe-in) and see what happens?

To my surprise, the soundstage improved quite a bit, though precision and immediacy seem to have been dialed back a bit.

The sweet spot may well be somewhere in between then. I'll experiment with that but I'll let things settle for a few days first.

I have three pairs of speakers in different rooms, and none are toed-in.  One pair is my Apogee Duetta IIs, which I don't think anyone toes in.  The others are conventional floor-standing box speakers, mid-level models by Paradigm and PSB that I use for background music, but sound fine with no toe-in.

IIRC, when I had Maggie IIIs in my main listening room, I toed those in.