I wouldn’t give up so easy, if I were you. Julia is in fact so well-designed that in the past year or so I wrote a package of some 5000 source code lines, and I never needed a debugger in the first place.
In addition, there is now the Rebugger! People who tried it say it is great.
From my Matlab days I remember that the debugger was a must. But then again, Matlab to Julia is as a dirt dugout is to 
.