Is French really more difficult than English?

This question is quite often the topic of discussions and the only informed answer is: « It depends on your point of view ».

But before going into the detail, let us first make one thing clear: basically, no one language in the world is more difficult than any other, and the proof is that all the children in the world learn their mother tongue at about the same age. Moreover, regardless of the language, those who speak it spontaneously in their daily relationships with their nearest and dearest do so with the same ease, in the same relaxed manner, without stopping every few moments to wonder how this or that grammar rule works or if this or that word is approved by any authority.