Everything adds up, but I can't really sum up everything in one comment (or maybe I could, but I haven't), and you are not reading all the other comments (at least I don't expect you to). There are factors other than convenience and price, and lately those factors add up so that a double-edged razor is my choice. There are times I use cartridges and there are times I don't. My main critique is that saying "Shaving is too expensive and is a demonstrative example of how most consumer products are designed to extract more money from you rather than to improve your life, or the world, or to be in any way remotely good." is _just_ incorrect.

Yeah this doesn’t match up with my experience. Double edged gets to equivalent efficiency after the learning curve for me.

Perhaps my hair is just soft, and I suspect it is, but I started out taking 10-15 minutes and now I can do a quick shave in 5.

It lasts longer, it’s cheaper, and easier on my skin — I break out less often.

Hmm. Just for anecdata: my shaving takes maybe 40-60 seconds with a cartridge I keep about 6 months. Yes, I know, I should be ashamed :)