The pitfalls of porn

How is the global reach of explicit pornography impacting the way couples relate to each other emotionally and physically?
The porn industry has been at the forefront of technological developments such as video streaming that are giving pornographic images greater exposure around the world.
Some estimates say one quarter of all internet searches include the word "sex". The industry is estimated at $96bn a year and employs public relations firms and lobbyists to ensure its interests are being heard in the corridors of power.
In recent years the growth in profits have come mainly from increasingly explicit images known as "gonzo" porn that depict women being objectified and dehumanised.