Dinner parties are perfect because I'm completely unsociable when it comes to regular parties - I detest smalltalk. Over dinner however, talk is deep and profound and often difficult and challenging. Friendships can be broken, or new ones made that last a lifetime.
The author has a problem with cellphones? Ask kindly for them to not be at the table, forgo the Instagram credit and make a stand. It's not going to ruin everyone's day for not having a filtered photo of your lobster this one time.
For those who don't think they can cook: it's a combination of understanding food chemistry and following instructions. Think about a favourite meal you had once and try and recreate - all good food needs is passion, the rest follows.