Usually, plants get most their nutrients from the soil, most importantly nitrogen (but also P, K and some others).
In some locations, such as swamps or very sandy soils, there is not a lot of nutrients for the plants to get and these “nutrient-poor” soils are usually those where carnivorous plants live. They simply get the nutrients from insects, which consist of yummy proteins made of nitrogen.
So basically one should not really wonder why carnivorous plants need sunlight, is has not much to do with mineral nutrients in the soil. Plants do photosynthesis by taking up CO2 from the air and using energy from the sunlight in order to produce C6H12O6, Glucose. And I guess this is also what the japanese orchid steals from the fungi - sugar.
Of course these processes do not work completely independent from each other. But Glucose, the product of photosynthesis, is not really considered a nutrient, that would be carbon.
On the other hand, using procedural generation should free up a bunch of dev time that you could than be using to make sure the models that the generation uses are quality.
I just played around a bit and noticed old comments appear when I sort my user profile by top or controversial of all time. Going do delete those manually tomorrow, though I have no idea if these are all. Comments are >4yrs old and definitely behind the assumed 1,000 comment limit.
As you might already know, the key is communication. As you described, nobody took the chance to say anything and that lead to frustration. Therefore it is so important to have an after talk. Try to think about your emotions and thoughts you had during the act to prepare for this, but also consider the general things in your relationship. Often the problem lies a bit deeper and might not even be connected to sexual things.
Try to be open and understanding, first think about what you could have done wrong. Formulate your sentences like this, send "I-messages" not "You-messages". Take your partners thoughts seriouelsy. Create an atmosphere where both of you feel they can be honest.
You mention "poor health" could be a factor. This has two components that are important for sex, one is fitness, the other one is attractiveness. Have you considered your wife has a point here? When married people often change, eat more, do less sports, they gain weight etc. This can happen without yourself realizing. Be honest with yourself, make a check and see if you are still happy with your fitness and body form. If yo are not, who knows, maybe your wife is ready to support you somehow? You would wonder how sexy it can be when someone just says "I was working out for 1 hour straight today" - you don't even have to wait for results.
You are starting to reflect upon yourself, and that's a great thing! Good luck for you!