Gluing Quarter Panels On vs. Welding

I tried it, the problem is, the bottom section of these cars isn't perfect, rockers, wheelhouses, trunk drop-offs, cowls, etc. And if the adhesive doesn't have a real tight fit, it will let loose; I tried panel adhesive, but it didn't work for me, as far as being easier; it's six of one way half a dozen of the other. I hate that dreaded 'POP' from giving out.