In regards to RP, everything is an important as your PC says it is, provided you can get other PCs to take you at your word.
I ran a complex, got blown up, reshipped, and then went back to finish my (less than 30 second) timer. Makkal says that she journeyed deep within enemy territory to do battle with enemies of the Caldari state in order to liberate the area.
Whether another PC accepts that she's gallantly struggling in a brutal, ongoing war, or whelping about low-sec playing a meaningless game the empires came up with to keep capsuleers busy is up to them.
Alternatively, when I was POS tending and making moon goo, Makkal just told people she was farming. Several PCs reacted with derision and disdain. My PvE battles in null were never more than 'routine sector sweep' or 'clearing the system of belligerents.'
I could have easily had her claim to be an industrialist in charge of an operation that employed tens of thousands, or said my PvEing was "Project Orpheus," a long-term campaign to bring stability and prosperity to the area.
The truth of any of these statements is simply a shared fiction players engage in.
It might be frustrating that there's no objective measurement of your PCs impact on the world, especially if your chosen activity is not appreciated by other PCs. (Or players.) But RP is all about the tenuous bubble where cooperative and competitive meets.