I tried to do one of the hardest things Destiny has to offer.... I died.
I tried to do the Weekly Nightfall Strike... alone (because there is no matchmaking). It was on Mars, and I defeated the 3 Cabal lieutenants and destroyed the Goliath tank, and I made it to the boss... I was then cornered and trapped and then I died after a lengthy last stand, and if you die once in a weekly nightfall strike you get sent back to orbit.
I can see why there is no matchmaking for raids, but why the hell not for a weekly nightfall strike? It's just like any other strike with matchmaking, it's only made the most difficult because it has the most modifiers and that's all.
This was my 2nd attempt, 1st attempt I died and was sent back to orbit before I even met the 1st Lieutenant, I made a big improvement in attempt #2.