I have wireless android auto with a built in conveniently placed holder for the phone that does wireless charging, and 95% of the time I still plug the phone in anyway.
My wireless degrades music quality very noticeably - really annoying.
I have a crappy dongle though, not sure if that's the case with all wireless.
Me neither - I have not used a cable connection once in 3 years I have my current car. Do not even have a lightning cable in the car. But hey, people are different!