Yes it does. I had reasons. I'm not saying that they're great reasons, but...
* because it's not obscure
* because I don't know much about it
* because once you open the can of worms labelled "PL/?" then it sort of explodes in your face, with fun aspects touched on in other comments, such as there being at least 2 different languages called PL/M, but PL/I and PL/1 are the same, and...
It's complicated, and I don't know enough about it... yet.
* because it's not obscure
* because I don't know much about it
* because once you open the can of worms labelled "PL/?" then it sort of explodes in your face, with fun aspects touched on in other comments, such as there being at least 2 different languages called PL/M, but PL/I and PL/1 are the same, and...
It's complicated, and I don't know enough about it... yet.