- Efficiency of wireless charging first of all, and I consider this to be a pretty firm reason against when there is no real benefit from wireless (nightly charging). I do recognize the added benefit from wireless charging in certain not so common situations, but not enough to justify making it the only option.
- I have been involved in project that included wireless chargers for phones used by automotive OEMs, and those can be pretty hard to qualify. On one design we had the type and level of radiation that is considered potentially harmful for pacemakers. And having in mind a lot of people would be buying these chargers from unknown and uncertified sources (cheapest one from Wish for e.g.) it makes me dislike them even more. Yes wired dodgy chargers can be bad, but the scope of failures is smaller.
- 3rd reason as I noted is a personal one, I just don't trust wireless as I do wires when it comes to data transfer (physical robustness), and I prefer to use the wired way when it's a reasonable option. This is rooted in the ethernet vs WiFi choice. But this is debatable.
Also current speed difference in transfer.