Why does ASP.Net RadioButton and CheckBox render inside a Span?

Question

I would expect this:

Answer 1

The plain RadioButton is often rendered without a span. If you set CssClass, Style, Enabled properties, the RadioButton is rendered with a span. This inconsistency is a real pain when I need to manipulate the radio button with client-side scripts. What I usually do is to apply a dummy CssClass so that it will always render a span consistently.