I saw an article about how the North American population of monarch butterflies almost went extinct, but bounced back when people starting planting native milkweed for them.
I'm concerned about 75%+ of insects dying. I thought "hmm I can probably plant some native wildflowers for insects in my balcony." Three years later we've crossed the mark of over 100 plant species in the balcony, including a micropond with swamp plants in a styrofoam box, and the balcony has become an insect oasis with a whole microecosystem in it.