Do you know why you like the smell of rain? It actually has nothing to do with romance. It’s the actinomycetes in the soil releasing a scent called "geosmin" when it rains. What you think of as freshness is actually a metabolic product of bacteria. Even more heartbreaking is that these things you subconsciously find "pleasant" are essentially traces left by microorganisms struggling to survive in the soil. So what you're addicted to isn't the rainy day itself, but the presence of a bunch of bacteria. Of course, don’t be too disappointed; about 70% of antibiotics used in human medicine are derived from them. In other words, you’re both enchanted by them and relying on them to "extend your life."