coop against bosses is fun and you also learn the boss patterns quickly. and if you die, there's nothing to lose.
both. it's attainable so why not.
More completion purposes. I just like getting the platnium for the souls games. Don't have demon souls since I started playing the game years after release T_T and been busy with rl.
It's just amazing that people have to resort to farming enemies for hours to get the covenant items instead of enjoying the covenant itself. I'm so glad all I wanted was the Obscuring Ring from Rosaria's Fingers and that pale tongues are so easy to get.