I've ridden since age 7, never had a hack, but after looking at some on here(WUMPA for one), I decided I NEED one.
Check out this build,Yamaha FZ1 dual sport sidecar build, the guy that built it is kick ass! I felt inspired after seeing what he did, EXCELLENT VIDEO too!
Watching him turn his bike into a hack sealed the fate of my 79 CB750F/SS, it's only a matter of fundage now.
I agree 100% on the training though, for bikes or hacks, my brother-in-law didn't take my advice on that and wound up in a coma for a couple of weeks. That was only on a 2 wheeler, IMO some class is a must, personally.
Make the leap, get the training, and ride the wheels off it!
Best of luck!