As a concerned EU citizen, I say:
Good riddance. Let UK serve as a prime example of why you do not leave the EU - oh and let's add Scotland ASAP and support their overdue independence. To rub some more salt in.
Frankly, the rest of the EU will be better off and might actually be capable of making more decisions without those constant naysayers.
Or, if all of that fails, let this show as the final proof of EU's incompetence. To get rid of that construct and replace it with something better.
Either way, I think of the Brexit as a good thing. It will bring change and clear some things up. One way or another. I do not feel pity for those who voted yes. Just another proof of democracy's shortcomings.