Too much Fa(r)cebook.
Seriously, the number of people who spend all their relaxation time buried in that pile of steaming shite and ignoring their partner is just astounding, no wonder no intimacy happens.... Especially, I have to say it sorry, women.
Its a little more than that, but that is certainly a part of it. I blame the smart phone. I thought I had a great marriage right up until my wife got an Iphone. Now admittedly I do spend a little too much time with computers and music gear. So I wasn't that worried about it when my wife first got her Iphone, but 6 months later I was genuinely lonely, felt ignored, felt like I could not a have a decent conversation with her, and its been a battle since. I try to have a conversation with her, she has to check this thing and wont give the courtesy of putting it away for all of it. I try to go places and do things with it -- we could be at an incredibly fancy restaurant sans kids and still has to whip this one (and yes, it might be limited to a brief snap of this to post about it, but its often not), I have sex with her and 30 seconds later that blue light is on. I can't even watch a movie with her without her checking it.
I even took the step of introducing a high voltage static discharge into her prior one. She simply bought another within hours. She is not a morning person, so to see her sprint up even before I did to rush out to the Apple store was disheartening. Coming up upon a decade and I decided to file for divorce now rather than risk my retirement to it.
Some people may have a less intense reaction to it than I do. It depends upon what speaks to you about being loved and feeling loved. For me its no different than choosing crack cocaine over your partner. 16 years together, the last 10 of them married.