In my opinion the strikes aren't fun anymore. I'm on Xbox and there's only 5, I must have done each one a hundred times. Yea maybe you can get some rare or possibly even legendary engrams if you farm the areas outside the strike, but you can do that anywhere. I do the strikes for the marks and rep because I'm working on getting a specific piece of armor. I join the strike playlist because I want to actually do the strike, I'm sorry it's so mundane at this point that I run through it as fast as I can, but I wanna get my shit and move on.