Of course I am not first one to come with this, and even I am not first time talking about this (although I didn't speaked loudly :)

It is very annoying to enter HTML markup every single time.
Technical progress all over the world makes life more and more comfortable, this technical progress invented shortcuts to many HTMLs verbosity.

It is obviously stupid to force people to enter <p> every single time, when all (s)he wants is to start new paragraph! This must be as easy as hitting "Enter" extra time.
Hitting "enter" is easy: it is large and duplicated. Entering "<p>" is hard, I need to search for all these chars yet graciously pressing "Shift" at predetermined moments; very complicated!

Why, oh why, some simple wiki-like markups are not here, on PM??
PM already has some shortcuts ([id://nnn] is an example), why not adding one or two more, which will significantly make life better?!!