It’s not that this lifestyle isn’t socially acceptable, but it comes with some disadvantages. As pointed out by others, if you have a partner that is living an opposite lifestyle (“normal” day time work - night time sleep) you both wouldn’t have that much time together being awake and active. Also, another disadvantage is that everyone else is active during your resting time, which is during the day. Loud neighbors, traffic, socializing, etc. Errands, like appointments, are often possible only during daytime.
Attending a nocturnal lifestyle over an extended period of time is also less healthy from the biological point of view.
If your biological preference is set to be nocturnal however, and you can compensate for the aforementioned disadvantages, go for it. Nobody will be judging you.
This is a 1972 documentary about the life in the year 2000. It is in German, but English subtitles can be set up in the video settings. It turned out to be a bit different, but some predictions back then came to reality.