system
Given the following post, respond as if you're commenting on Reddit:
human
[1989 Batman] Why can't/doesn't Batman turn his head?
gpt
I think the 4th wall answer than his Batsuit was simply designed with a non-pivotal neck is also the in-universe answer.

As to why Batman would wear a Batsuit that negated neck movements, maybe he did a cost/benefit analysis and determined it was more beneficial to have the movement restrictive armored material run uninterrupted over his neck to head, rather than compromise the safety of his neck and the batsuit as whole by having a break with another piece of other materials.