Where else would we hang around in women's clothing? :-)The rhythm _is_ inherrent in the melody, but that's only cos the players know the time signature. There might not be a need for bars if we had the time signature plus an 'accent' (or something) to mark where the first ONE beat comes. But 10 pages through the score, suppose you lose track of where the accent comes? Boy, you's in a world of hurt now...
Grab.