Should men urinate while sitting or standing

In many countries, in many cultures, children are taught that boys stand and urinate while girls sit. But now the health departments of many countries are raising questions about this widely spread and natural notion. How should men urinate? This question is often asked about health and cleanliness, and for some people it is also a matter of equal rights. Then who is right? And the most important question is, which method is right for men?