I don't do Raids/Skolas because I don't have friends to play with, and not comfortable with having to find a Fireteam on some LFG site and then having to talk to these strangers, for an activity that likely will require several hours in one sitting. You can call me casual, I'm pretty sure I am, but you know nothing about my skill level. Also, I don't have any Expansions yet, because I knew they were gonna bundle everything for a lower price eventually. So I'm locked out of some required activites anyway. And I'm not alone in that. In my world, some other Guardians took care of the larger bosses. There are millions of Guardians out there, working towards the same goal. ;)