Thanks for the link KMA.

"Ladies and gents, put down your technology and have more sex.
That's the advice from a team of scientists who found people are becoming so enveloped by their phone and tablets that their love lives are being put on the back burner. 
So if you are one of those reading this on your smartphone in bed, a glance across the sheets is likely to reveal your partner is engrossed in theirs too.
The researchers discovered 70 per cent of women said smartphones were interfering in their romantic relationship. 
The study said technology and the screens that consume us are creating 'technoference' in couples."

More here

Compare to declining birth rate in Japan in this article here. Could there be a link?

"Various reasons have been cited for the population decline, including:
  • The rising cost of childbirth and child-raising
  • The increasing number of women in the workforce
  • The later average age of marriage
  • The increasing number of unmarried people
  • Changes in the housing environment and in social customs."