Correct me if im wrong, but you sound like you pursue goals.
I pursue events/excitement. I interdict people in wings for fun... because its fun to tease them. And thats just one thing.
The thing about goals is the fact that there will always be a more effective way of getting there. And some people do that ONE thing compulsively and then burn out... its your own fault in a way.
Aye, but it does come down to different strokes. When it comes to interaction, for example, I prefer a friendly, constructive encounter- a conversation, comparing experiences or loadout, etc, even to a certain extent collaboration- to an aggressive encounter, i.e. interdicting or attacking another player. For reasons I already listed, the game itself isn't so much a haven for non-aggressive social activity; although I would often find a heavily populated system and drop out near a Nav Beacon- in a heavily armed Anaconda, to discourage anyone from pew-pewing at me- I would only very rarely find an enjoyable conversation with another player. Most of the time it was just 'Nice ship.' 'Thanks!' 'Well, bye' and they'd go off to shoot pirates. The only real exception was when Leonard Nimoy passed away and I, along with others, made a pilgrimage to a system as a sort of memorial, and chatted a bit in the process. For the most part, though, if I want to have a friendly encounter, share and learn amongst players, the forum always felt like the better place to do it by far, which was a definite shame; much of what kept me playing MMOs like WoW or City of Heroes was that, in between hack-en-slashems, I could have awesome social activities with people I'd met, without PvP or sometimes any combat whatsoever.
I already mentioned that PvP isn't really my thing, (beyond very occasional forays,) and because even pure social play is (or, at least, was while I was playing) very, very shallow here, it largely left me relying on the game's own content, which was... well, not exactly fleshy.
It isn't the fault of the game for not catering to my tastes, certainly, I'm just pointing out that some people who aren't 'clicking' with the game just ultimately might just be looking for something the game can't offer them. I'm well aware of all the stuff you can do involving other players, I'm just not interested in a majority of them. E

is one of the main 'big space sims' out there right now, along with Eve Online of course, so it's inevitable people who are interested in a big space game will flock to it in order to get their sci-fi fix; it will ultimately appeal to many people, but there are also many who just won't be engaged by what it has to offer when all is said and done, because like any other game, there are areas in which it falls short. Some who choose to grind probably do so because they're already bored with what the game currently offers, and hopes a bigger ship will 'make things better.' (Which, spoiler for anyone in the mindset, it proooobably won't.)
As other space games come out, though, and other niches are filled- Star Citizen presumably filling the absurdly complicated niche, NMS the 'explore like a happy space butterfly with lasers' niche- there'll probably be less dismay, because there'll be other options, and other flavors of space game to keep everyone happy. :3