I read somewhere that ****possible SPOILERS**** Luke will go to the Dark Side, then return.  How true this is, I don't know, but I'm hoping that it is real because that would be awesome!

It’s confirmed that Mark Hamill (Luke Skywalker) will return to his signature role in “Star Wars: The Force Awakens,” but how he will fit into the plot remains a mystery – and it has led to theories that the ultimate intergalactic good guy might have crossed over to the Dark Side.

Of course she does, but he was blind to see it. He was focused on becoming a hateful and an arrogant man.

IMO because of lazyness. You can book anything online these days, and you don't need one. I have a friend that opened a travelling agency just when smartphones were unveilled and guess what - he is now an insurance broker.