Question(s) to our brilliant modders!

[Feuer Frei!]

Kaleuns!
I posted this in the SH 5 forum as it isn't really a mod question/topic and this thread is more of a general nature.
I wanted to ask the modders some questions.
The reason for this is that the community greatly appreciates all the hard work work and dedication you offer to SH games and that your perseverance in modding has allowed us to experience some wonderful gaming moments within the SH series of games.
Now, i'm wanting to know what actually makes you modders 'tick' and what makes you guys keep on modding?
And for instance, what in your opinion has been the most difficult challenge to date in modding?
For example, a structure, a script or a code that you just couldn't grasp?
And what has been the most rewarding moment?
Which mod has been your biggest success story so far?
Also, has there ever been a mod that you have started and then binned? Or deleted before posting as a WIP here, but thought it would be too difficult, time-consuming or just not viable? Or all of the above?
Would be interesting to get a idea of any 'Mods that were never intended for release' info, or the like.
Please note that the above questions are ONLY pertinent to the Silent Hunter games.
I think i speak for most of us here and ask these questions only because we are truly interested in what makes you guys operate and keep the faith with your modding of these games.
Would be great to get some more info about you guys.
Kind of like a 'profile' of modders here!