The most common occupation I encountered at nightclubs

There was a time when I used to go to nightclubs quite frequently.
Every time I went, I would go on at least 10 dates (booking) or so.
The occupations of the women I met back then weren't as diverse as I expected,
but the most common one was kindergarten teachers..
It was so surprisingly frequent that it felt strange. At the time, I thought it was either because
there was a professional reason why people in this field visit nightclubs,
or it was because it's the easiest and most convenient occupation to use as an excuse, so they were lying about being kindergarten teachers.
I thought it had to be one of those two.