Why did the Greeks give praise to Demeter, Dionysus?

Demeter – Demeter patronized agriculture, especially arable farming. She gave people grains of wheat and taught them how to grow bread. Dionysus is the patron saint of winemaking.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.