Straights are to shaving like pipes are to smoking. History, tradition, results not otherwise attainable, something that was commonplace for our forefathers but an uncommon art today. And all the wonderful accoutrements and paraphernalia... Plus when you're done, you don't throw away the blade, it's a prized possession. The learning curve is worth it, yet it is steep... And both pipe and straight can bite if used carelessly by newbie or old salt alike. Straights, at their best, give an uncommonly close and comfy shave without irritation.
Beware, both pipes and straights can result in myriad forms of "acquisition disorder". 8O