This doesn't seem to compare the actual number of marriages happening in these decades - my guess is that fewer people are getting married and/or they are marrying later in life. Meaning people aren't pursuing marriage just because that is what they are supposed to do, but instead because they actually want to.
As for people being flakier - I still think that is actually true - but as a result of communications technology. When you had to agree on meeting someplace a week in advance and not have contact with that person till then, you inherently have to be more "reliable," otherwise you would become known as being flakey for not showing up.
So I don't think it is the people that have changed, just that we still are adjusting to having the ability to be instantly connected with everyone in our lives.
As for people being flakier - I still think that is actually true - but as a result of communications technology. When you had to agree on meeting someplace a week in advance and not have contact with that person till then, you inherently have to be more "reliable," otherwise you would become known as being flakey for not showing up.
So I don't think it is the people that have changed, just that we still are adjusting to having the ability to be instantly connected with everyone in our lives.