I remember describing it as driving with a teenager, they got the general idea, but would make bad decisions so you had to watch them.
This is worse than just driving yourself. I either need to be engaged in actively driving, or it really needs to be able to handle the task by itself.
It's why I find the lane-keeping feature in my vehicle to be useful, but lane-centering is just too weird for me to use.
I'm a big fan of assists where I am still actively driving. They are there if I make an error (e.g. drift to the edge of a lane) rather than doing the driving for me.
Lane-keeping is actually on by default in my vehicle, and I find it to be a nice feature. Lane-centering feels too weird for me, so I've tried it out but am uncomfortable using it.