I really agree with what you guys all wrote on feeding-it->begetting hunger. So long as one's sex-drive is intact - there will be lust for something beyond whatever your 'lust-edge' is. If the average 'non tznius' profile pic were commonplace enough to no longer be provocative/triggering - that could only be because we're constantly looking at similar things - and if this is the case, surely there will be something else just racy enough to be triggering - and then the cycle repeats itself (especially with us addicts). With that said, I think you probably already realize this - and I'm stating the obvious.
Two other points:
- When Avraham Avinu went through the test of the Akeida, his struggle was not only emotional - but also philosophical. The Yetzer Hora brought a ton of intellectual challenges (along the lines of: are you really sure that Hashem wants you to do this... perhaps the real test is for you NOT to do it since this is against everything that you've done so far!!! Etcetera). His questions were rational and made sense. Avrahams victory was not in overcoming these questions and finding answers for them (although I'm sure he was capable of it) - instead it was that he 'turned off his logic' and just did what Hashem told him to with zerizus. And it's very significant that this was Avraham doing this - the man that 'rediscovered' the ONE Hashem through deep analysis and reasoning. The lesson is that while it is important to get to where we are by thinking/reasoning/questioning - this is when we are working on understanding the world & reaching the next level. However, when one already knows what he needs to do (& especially in the midst of a nisayon) - it is not the time for internal debate & reasoning! It's time to just love Hashem (& thereby inherently trust Him) - and throw away whatever logical reasoning the Yetzer Hora is selling at the moment. Perhaps at a later time, one can return and resolve/delve into them (as we are here) - but NOT at the time of the nisayon! (I am by NO means saying that I'm currently living up to this myself. In practice it's very hard - and those 'logical' arguments make so much sense when I'm in a spirit of tipshus.... just saying that this is what we aught to be doing)
- on a purely philosophical (i.e. hashkofik) level - and I really hope the below is not triggering to anyone - I do think that if we were TRULY spiritual, then things like clothing would not necessarily be required & all of the things that we're struggling with here (@ GYE) would be completely irrelevant. However - that TRULY spiritual world is the world of Gan Eden before the Chet Etz HaDaas. Unlike the christian concept of original sin, we do not subscribe to the idea that a person is inherently evil & tainted - however it is still a legitimate statement that we all now have an inherent drive for self-destruction that is tied to our self-awereness (in jewish terms: Yeishus/Kelipos/etc, in psych terms Ego/Id/Self-Destructive Urge/Etc, etc etc). When I hear all the feel-good, liberal/progressive rationalization for where western society is heading (i.e nowhere good!) - I don't think that what's being claimed is completely without merit. Rather, I think it is almost always completely misguided because it ignores the fact that people are corruptible & can at times be self-destructive. A great analogy can be made to Communism/Socialism - the idea of giving each man according to his need, and taking from each man according to his ability - is a very nice noble idea (even if you don't agree with it, it has merit) - but it ignores the reality that people can be lazy, corruptible, and need tangible rewards - in the current world.
Perhaps when Moshiach comes, much of this will change - including us returning to the 'natural' state that we had in Gan Eden & not needing external modesty - and perhaps not. (I suspect not, or certainly not right away - but am certainly not anywhere close to having a real opinion on it) Anyways, sorry to have written something so long winded - may we merit to be there when Moshiach comes and see how it practically happens.