I think Nero turns this off so that when you insert a Disc to be copied from, media player or other programs do not automatically want to run therefore spoiling the burning process,it usually asks you if you want to disable auto-run first.
Dell XPS 13 9370 (2018) review
The art of 'British' pulp fiction
Best password managers for Mac
TV & streaming : comment regarder le Tournoi des Six Nations 2018 ?