Bonjour ! Our friend E-J has raised an utterly interesting question in this post. I fully agree with her that this might be the object of a whole thread, as this question often wanders through my brain (each time I meet would used in a past tense, i.e. almost every day! ). I know about the similar sense of used to. But sometimes it appears that would might be chosen for some other reasons, which mysterious nuances I am unable to decipher. Would you please help me?