I never push a blade. Why would I? They cost from 8 - 25 cents or so per blade. I've calculated that with 365 shave a year using a Feather blade three times, and presuming 30 cents per blade, a higher price than I've ever paid, it would cost me under $37 annually. The fact that I've never paid more than 25 cents a blade means my real cost using a Feather 3 times and tossing is $30.42 per year. And that's if I only use it three times! I usually go four to five shaves with a Feather, like most blades.I don’t think your alone.
Feather blades give me up to a week of what I consider BBS shaves, but then I tend to discard them because I like to change razor blades on the same day every week.
Having said that, after that time I find that some other blades could probably provide me with a few more days of BBS shaves than Feathers do.
Whenever I tried to push it, after seven to ten shaves Feathers dropped off rapidly, while some other blades just seemed to keep soldiering on.
Maybe I get more than average mileage out of safety razor blades because I pay the same attention to my pre-shave routine no matter whether it is a safety razor or straight razor shave.