Why is porn so addictive?

Read also:

• Astronomers discover the largest 'ultramassive' black hole ever seen - Earth.com
• Is there a specific time frame for therapists to tell their clients they are wrong?
• According to Amy Schumer, John Cena was actually inside of her during the TrainWreck love scene. I thought that was illegal in Hollywood?
• Is it socially acceptable for individuals to wear clothing typically associated with the opposite gender? What are some reasons for or against this practice?
• What is so great about Jiraiya?
• Aspergillus fumigatus, lethal fungus spreading across US raises alarm — Florida, Texas, California & more states at risk - Mint
• What is the correct way to say "you're welcome" in French? Is it "de rien" or something else, and if so, what is it exactly (including accent marks)?
• Why do some men love sucking cocks?
• What are some tips for making your husband fall madly in love with you again after going through the worst phase of your marriage?
• I gave him everything. He said he loved me. Why?
• Why won't my mom let me come home if I'm homeless?
• What celebrity do you admire the most?
• Why doesn't California have the tools, people, means to put out these fires even though they know there will be fires every year?
• Chesterfield man reverses diabetes after losing seven stone - BBC
• Why do US military soldiers/officers have a chest full of medal ribbons when they probably haven't been in a combat situation? Are the medals for attendance, good behaviour, or long service perhaps?