Browsing social media for a few hours and talking to friends for a few hours will each give me a high that feels about the same, but the high from social media also feels sickening, as though I’m on drugs. Similarly, junk food is often so unhealthy that it is literally sickening.
My assumption was that wireheading would impart both a higher level of pleasure and a greater feeling of sickness than current superstimuli, but now that I have read your perspective, I no longer think that that is a valid assumption. I still would not wirehead myself, but now I understand why you are confused that wireheading is not being pursued much these days.
Have you tried using Cronometer or a similar nutrition-tracking service to quickly find these relationships? I’ve found Cronometer in particular to be useful because it displays each nutrient in terms of a percent of the recommended daily value for one’s body weight. For example, I can see that a piece of salmon equals over 100% of the recommended amount of omega-3 fatty acids for the day, while a handful of sunflower seeds only equals 20% of one’s daily value of vitamin E. Therefore, I know that a single piece of fish is probably enough, but that I should probably eat a larger portion of sunflower seeds than I would otherwise.
I suppose a percentage system like this one is just the reciprocal of saying something like “10 eggs contain the recommended daily amount of vitamin D.”