Since you have been doing this over the years, the soil and its microorganisms have been doing all the necessary adjustments. Test your soil once every three years to adjust soil pH. Leaves along with other organic materials need to be monitored, but your practice is a positive effect on the soil. I hope you keep up this practice. This past growing season, a lot of people had problems with early blight on tomatoes. When it rains or you water tomato plants, the water splashes the bare soil, transporting the fungal spores onto the lower leaves.
Eventual death follows.
This reduces the spores' ability to get on each plant's lower leaves. There are fungicides that control early blight, but try this cultural technique first. Using good cultural practices in your garden saves you time and money and reduces your exposure to chemicals. Fungus gnats are insects that usually plague houseplants. They get started when you keep soil too moist, giving gnats a great place to breed.