I tried everything as you have OP. And right now I am back to trading because its the most consistent way of making money. Other things are more fun but after you realize how much time is wasted and you've only made 5% of what you could have made by trading you get frustrated and go back to boring trading.
I do feel exactly the same, though thankfully I'm sure we can put this down to balancing issues that all new online games experience. Its one of the reasons I made this post to see what things other people been having fun doing, as whenever I stop trading and rebuy my bounty hunting ship, It gets me wondering just how much left is there to do?
It definitely feels as though PVP / Co-op is the way to go in the future, so lets wait and see what comes about in the wings expansion.