How to use Emacs to write comments with proper indentation, line-length, and wrapping?

I'm tired of writing comments that look like this

{
    # bla bla blabla bla blabla bla blabla
    # bla bla blabla bla blabla bla blabla bla blabla bla blabla bla bla
    # blaaa bla
}

I have to manually wrap the lines and take care of the # as well. How do emacs pros make the editor work for them?