I miss turnings like you miss controls. Even with the alerts on routes, I am a terror for getting lost in conversation. Next thing, I am having to zoom right out because the track and route are nowhere to be seen. There's no way I could enjoy a ride concentrating on following a line. At least I know with routes that I ought to concentrate in X many km.
I used to work as a grill chef, everything in my working life had to be done in a time that was measured in minutes, with about 20 minutes max.
Part of the reason I use a route is that I can look at the next instruction and see it's 3.2km away and the GPS is telling me I'll be there in about 6 minutes. I can then zone out for 5 and a half minutes, get lost in conversation or just looking at the stars, but my inbuilt timer wakes me up and makes me look at the GPS again to see that it's 500m away and only 50 seconds to go. I rarely miss a turn this way (although it's not entirely perfect).
I can't use tracks as I can't be bothered to focus on them all that time. I want it to tell me what I wanted it to tell me when I told it to tell me, not at numerous points in-between.