Motorway driving sure, there it's closer to fancy cruise control. But around town, no thank you. I regularly drive through some really crappily designed bits of road, like unlabelled approaches to multi-lane roundabouts where the lane you need to be in for a particular exit sorta just depends on what the people in front and to the side of you happen to have chosen. If it's difficult as a human to work out what the intent is, I don't trust a largely computer vision-based system to work it out.
The roads here are also in a terrible state, and the lines on them even moreso. There's one particular patch of road where the lane keep assist in my car regularly tries to steer me into the central reservation, because repair work has left what looks a bit like lane markings diagonally across the lane.