We have all those fancy features in our Tahoe and it's nice to be able to turn them off. The blind spot detection is nice because it has some pretty bad site lines and in the right spot you're looking over the car that's beside you. The lane assist hasn't been a problem, what I do like about it is it has light that changes color on the dash which is nice in certain weather conditions when it's hard to see the lane (no reflectors in them here and they get pretty faded before they repaint them). The crash avoidance almost makes you have an accident. When someone brakes suddenly infront of you and you're already thinking of that the last thing you need is alarms and red lights flashing infront of your face distracting you.

Some of those safety and driver assist features might be helpful but they also make bad drivers worse because so many of them see to stop paying attention to what they're doing because their car is doing it for them.