I dont think I would call going over what I have seen in week 1 again and again for "years of entertainment". It would be different if I got access to new content as I slowly levelled up, say a new planet every 5 levels. But there is no long journey, after a week you will be able to visit and defeat anything but the raid. Sure you can up the difficulty, but that's not really new content, just handicapping yourself. The only progress you can look forward to is new gear, and that [i]is[/i] acquired by basic grinding.