A record-high number of 40-year-olds in the US have never been married

If you’ve made it to your 40th birthday without tying the knot, you’re not alone, according to a recent report from the Pew Research Center.

40-year-olds these days are millennials, right? This is a continuation of the trend in people not getting married for a myriad of reasons I'm guessing. How have attitudes on marriage changed from generations?