I don't think it's that you have an opinion - it's what the opinion is
You said it was underwhelming, and I can see where someone might find that funny, considering there was the death of two important characters to the current storyline, Drogo and his son, that completely alters the direction that part of the show was taking, another character is named 'king of the north', freakin' dragons show up, and the most important event of the night - Tyrion is named Hand of the King. Tyrion, one of the coolest characters on the show, may not be large, but he's now in charge. He has to go back to King's Landing and deal with all those people we've been hating - and he's smart enough to know how to do it. I can't wait to see how this plays out next season!