Serendipity (countable and uncountable, plural serendipities)
1- An unsought, unintended, and/or unexpected, but fortunate, discovery and/or learning experience that happens by accident. 2- A combination of events which are not individually beneficial, but occurring together to produce a good or wonderful outcome.
more amusing: "searching for a needle in a haystack and rolling out with the farmer's daughter."
Because those are the idiots that believe that everything that happens, including you being lazy and doing nothing, has a purpose. Those are the ones who believe that you can just sit back and do nothing and fate will still have its way. If it was actually true that a girl will come when you don't look for her, it would be women proposing to men.