Yeah funny... I knew this for years, even reading the Zahn Trilogy, that if Lucas wanted to make more movies he could ignore everything done in the EU...
Except that in 2005,
he said publicly that there was not going to be a sequel trilogy.
This was Lucasfilm's official message until the takeover by Disney in 2012.
So, for seven years, Lucasfilm's policy was that the Expanded Universe's twentyone years' worth of stories was
all there was ever going to be that was going to be set after ROTJ and cover the story of Luke ... and by extension: his family, which would have included also Han and Leia's family etc.
At Celebration Europe II in July 2013, Leland Chee and Pablo Hidalgo said publicly that they were going to clean up the EU and create a single timeline that would be integrated with the new movie and all new material -
not that the post-ROTJ EU was going to be thrown out.
Then Lucasfilm turned, with the press release of April 2014 where they specified that the "EU" wasn't going to be followed and that it was going to be renamed to "Legends".
By that time, the EU had established several much loved characters and story arcs ... over twenty years' worth of material that was going to be retconned out of existence.
If someone promises you something and then notifies you that they can't deliver that - then you would normally expect to get something of equal or higher value in return. Instead, they got
The Force Awakens, which was viewed by many fans as a huge disappointment on multiple levels.
Is
The Force Awakens with a rehashed plot and a "
Mary Sue lead" worth more the over a dozen series and over a hundred books that it replaces?
Of course, the answer is very personal - it depends on how much you have invested yourself in the books.
For most fans the answer is probably somewhere in-between "No" and "I don't care".
If you say "Yes", then you probably just dislike the EU -- and you should be honest about that.