[@BrokenPromise]
When I said I've got a 'water affinity' in this particular situation, I meant it in a very literal sense -- water signs such as Scorpios are actually known for enjoying showers/swimming/et cetera more than most people, and this is a trait I have. I actually go so far as to use showers to meditate and even go to the indoor pool if I need time to contemplate or for exercise. I know everyone has these qualities, but they're very extreme for me.

However, whenever I refer to 'water affinity' I'm usually also referring to the astrological concept of the elements. I should've made this clearer. While you've given a good example of how elements can be perceived differently, there's a very specific concept behind each element according to astrology. This is just a basic piece of information I took from a site as illustration, and it won't be overtly in-depth.

[quote=Water Signs]The water element is the one of big feelings and imagination. Water signs are submerged in their surroundings, often sensing the hidden emotional reality.[/quote]
Fire signs are known to be very extraverted and all about physical action and a focus on the immediate gratification, while those of the water element are more introverted and see the world in a very deep and immaterial way, looking into the hidden meaning behind everything and having very acute 'psychic' qualities. Both of these elements are passionate, but one prioritizes its passions on immediate and physical desires while the other is rooted in spiritual emotions and mental depths. I don't plan to go into all of the details here, especially since I don't even [i]follow[/i] astrology, but it should give a good idea of how these two elements are perceived in astrology. You're right that the elements are subjective in meaning, but astrology has a set belief system regarding them.

[hider=Additional Example]
If you'd like another example, I'll give you a notion that I usually think of when I imagine water. This is something I created myself based off my own understanding. Picture trying to grasp water in your hand -- it'll immediately escape you. In this sense, water cannot be governed by the physical because it moves according to its own flow and can adapt to any environment, and while it is gentle and sustains life it is also powerful enough to easily wipe that life out when angered. This analogy suits Scorpios in particular because they are infamously more unruly, violent, and powerful in comparison to the two other - more gentle - water signs. They're also the more harsh and analytical of the three water signs.[/hider]
Anyway, minor astrology lesson over... As for the other thing...

That definition of rogue makes sense then, though - like I mentioned earlier - I don't feel like a pirate or treasure hunter is the sort of archetype I'd be if I was in a fictional work, but that's mostly not important here considering this is just meant to be entertaining anyway -- just my usual deconstruction of details, so don't give it too much thought unless you want to.