I don't understand the attraction to a quill stem.

I like threadless because it has allowed me to experiment with many different angles and lengths of stems without spending that much money.
Once I found a cheap angle and length of stem that worked for me (about six stems into it), I bought a light, strong (and not-so-cheap) stem of that length and angle.

Threadless impresses me as the stronger, cheaper, and more versatile way to go.

Quill stems seem primitive, inelegant and an all-around bad idea perpetuated by fashion and tradition.

Please don't take my opinion personally.
I mean no disrespect.
I like traditional-geometry lugged-steel frames for the same reason, I think, some people like quill stems.
Personal aesthetics.