You have to be better at not taking things so personal. This is a message board.
I could say it's condescending to Luke to suggest because he has two bad games (and he'll be the first to tell you he did) in a row that suddenly what he did the last four months doesn't count and makes him not ready. Besides, we're not arguing whether he's ready or not, because he's not. Very few 20-year-old's are ready for what he's going up against. But he's put himself in a very attractive situation. In the NBA he'll have the same chance to develop and get better as he does at Duke....and it's probably better because a team is willing to invest millions in him so they're going to follow through in their training.
Like I said, we're fans on a message board. We can say we have Luke best interests in mind, but that's really not true. I want him to come back to Duke because he's really good and it means Duke will be better. I can tell myself all I want it's because I want him to improve his defense, or his quickness, or his strength....all things he can do in the NBA, mind you....but they're talking points. If he's my friend, my kid, a relative or any other scenario....well, I have a really tough time giving him the advice to come back to Duke and play for my favorite team and pass up millions of dollars. That's really what we're doing.
Now, of course, there's the chance Luke does want the opportunity to play another season at Duke and create his own legacy. That's a decision he will make with his family. While there was virtually no chance of Jabari returning, he did struggle with his decision because of those factors....and Luke is a little different because he's not going to be a top-five pick like Jabari.
Again, I don't think the argument here is whether or not he's ready. Few rarely are. It's going to come down to weighing his options, and from my vantage point, the weight is shifted pretty decidedly to one end of the table.