re: Why did disposable razors become popular?

I buy a 20 Schick Xtreme 3 Blade for $20. Lasts me 2 weeks, or 50c a week. Acceptable shave with my barbasal can cream.

For me it's a time thing. Step out the shower, rewet my face, quickly lather, zip zip zip - one pass, towel off, and finished before your badger brush is loaded.

Have an old 1960 Gillette fat boy. About four times a year, usually on a lazy Sunday morning, I use it. 2 lathers and passes, and my face is smoother than the proverbial babies arse! Love it. But cannot spend that much time on workdays.