This is the end.

[RiceisNice]

..

The same could also be said on the other end; don't use duty finder or random parties if you can't tolerate the idea of being (over) criticized for your playstyle, especially if you're going to retaliate negatively about it. The matter of fact is, duty finder isn't designed for me, but it's not designed for you either, or honestly any particular group of people. It is, quite literally, a tool used to get a quick group together for content. That's what an online game encompasses, you're going to run into a variety of people. And honestly, considering how hostile the OP has gotten toward some of the replies, it's not entirely out of the question that there's more to what we're seeing from his side of the story.

Everyone in the party is expected to perform their role because that's how the game is designed. If the healer isn't healing, people will die. If the tank isn't tanking, adds get loose and people start dying. If DPS isn't doing their job, things die slowly and dips into the tanks and healer's performance. That's why you have a vote kick feature to deal with people who can't perform their role up to snuff or get rid of unsavory characters (granted there outliers who abuses this, but you can GM report it anyway).