When I bought my bike it had the stock shield adjusted all the way up, never moved it until I replaced it with a F4+4 which isn't adjustable. Haven't felt any desire to move that either even if it was.
In warm weather (70 degrees or above) it's all the way down and colder than that I raise it about 3/4 of the way up just so I can see over it without any special effort.
If I wanted to look through a windshield I'd drive a car but that's just me and I don't mean to offend anyone.
With a 4+ Cee Bailey I put it to the bottom in the rain & use the face shield. But then back up just above mid point & look thru it for normal riding conditions & up further when it is cooler in the spring & fall.