It's a common belief that roughly half of all marriages in the United States end in divorce; in reality, that number has dropped off somewhat in the past few years. However, so has the percentage of adults getting married as well, so it may not necessarily be that people are finding it easier to make a relationship work, as much as they are just putting off marriage in favor of living together or just being in a relationship outside of marriage.
While 50% of marriages ending in divorce is not quite accurate anymore, recent census figures state that approximately 1 in 5 adults has been divorced sometime in their life. Notice that doesn't mean 1 in 5 that have been married; when you consider that out of those 5 individuals there are of course going to be those who have never married, you see that divorce is still quite common among people today.
And this of course doesn't include those who are technically married but separated, whether legally or just living apart from one another for reasons other than career or convenience.
Sometimes these statistics are hard to accurately pinpoint because people are often very private about these matters, and sometimes a separation will occur that is only temporary or that seems to repeat itself in a marriage, or is not yet legally recognized.
Perhaps these are the reasons that marriage is at an all-time low right now, according to recent research by the National Marriage Project, which predicts that as of right now, some 85% of young Americans will never marry. Also according to the Project, in the 1970s, 53% of people stated that they were "very happy" in their first marriage; today only 37% of people make that same claim.
It's probably not presumptuous to say that most people get married because they think it will make them happy, and yet they may look at the statistics and the reality of those around them - friends and family who are divorced, who are separated, who are contemplating either option, or who are just downright miserable - and wonder if marriage is all that it's cracked up to be.