Running into stationary objects has a pretty adverse effect on comfort.
I much prefer to drive a vehicle where I'm clearly responsible, but the (on by default) assistance features might help me out from time to time if I screw up. A computer doesn't get bored of checking if there's a slowing vehicle or (if it checks for them) stationary object in the path; but I'm pretty sure I wouldn't stay alert enough to jump in. OTOH, I also don't like using cruise control either, but that's not because I want to stay alert, but because without radar cruise control it's too much work to use, and I don't like the following distance options for the radar cruise control I have access to.
Not having sensors that see trees without reducing comfort is a choice.
If the car can’t drive safely in a situation, it needs to require a driver.
Overturned truck or stationary emergency vehicle should be pretty high on the list; trees maybe a bit lower. But the sensor package doesn't do those well, so in the interest of comfort, stationary objects are filtered out before avoidance algorithms are run.