It is important to do Dua to Allah Almighty in all situations. Let the servant do dua in danger, difficulty, hardship, illness or any adversity -- it is beneficial. In favourable conditions, when there are no such issues, it is still necessary to make Dua, and it is Sunnah to make Dua in all situations. If someone thinks that I don't have any special needs, I don't have any big problems, I don't have any illness, I don't have any debt, I don't have any need for money, why should I supplicate? What could be more stupid and unfortunate than such a thought?!