There are levels of survival. Yes, in a post-apocalyptic society you probably won't be able to get your medical gloves. But you will be better off that the mid

There are levels of survival. Yes, in a post-apocalyptic society you probably won't be able to get your medical gloves. But you will be better off that the middle ages, because you'll know about sterilizing your instruments and so on, you'll have medical textbooks and trained doctors who will know that leeches are not in fact useful for treating headaches, ear infections or hemorrhoids. You won't be able to fab computer chips, but if you have a good stockpile of cheap arduino stuff you'll be able to make machines and automate aspects of your life. You won't be able to create petrol to power your vehicle but you (or some handy McGyver type) probably can modify existing cars to run on firewood (like almost every motorised vehicle in continental Europe was during WWII). Our existing knowledge alone would make the survivor's post-apocalyptic lives far, far better than the middle ages.