Being near water calms me down and gives me strength i need.
Water is an neverending source of power and we all need it for different things. When a water user fights near a water source, he can drown his oponent or confuse them by changing it to mist. It combines well with other elements and it is a component of the following kekkei genkai: storm relase, boil relase, ice relase and wood relase.
Earth is the worst possible match-up for a water user since it can absorb it. To me, Earth is quite dull and dead like. It is predictable unlike water.
Other elements are interesting as well, but i find them less useful than water, since we need it to survive.