Is doing something the longer way instead of shorter while breaking common habits and conventions in order to achieve this same effect better? If you think not (as most people) why do I have to, in order to have new line press space space enter instead of just enter? If as I've discussed it few times on MSO you have to use meta why can't someone code it that pressing enter would insert two spaces before it? It's so freaking frustrating and unnatural. Why, God why?! It's so freaking unnatural and frustrating...
OP Question Translated:
I hate having to hit 'space' twice to insert a new paragraph in my post. I'd rather hit enter.
Using two spaces does not start a new paragraph. When doing that, you're breaking the layout. You should use a blank line instead, and only use the two spaces when you really need a new line without starting a new paragraph.
And above all: note that the posts are not only used on the websites. Though on the website using the two spaces might only have some bad effect on the layout, for other usage scenarios you might break even more.