I'm not sure where the the thread started in all of this but the long and short of it is, you can play how you want. However in content like Bozja, a certain level of solidarity is expected. You can focus on dps, but if you're not in a group with a healer then you're relying on the kindness of strangers. I mean I get it, you want to play the way that is more fun for you but to not be willing to work with the players around you means that you are basically treating group content like solo content and it would probably be easier for you to do that with a group of like-minded individuals in the roles you need. Just saying.