It can be a very good thing if your labour doesnt start with waters breaking, because you have more freedom and less pressure to get a drip up if THEY think labour is taking too long... which is not fun. Because the waters have broken they put you on a time limit. You might think thats cool because you have your baby sooner, but if you need to have your labour sped up on a drip it usually makes labour less managable, and often results in further interventions, i.e. pain relief, then others as a result of that.