Never played a long game of D&D without house rules. Short games yes but the longer the game the longer the list of house rules.
I would actually consider a by the book game inferior to a house ruled game unless everyone involved found the official rules for every situation that came up in game well done. Since players generally are crazy and constantly do things nobody could think of before hand(last night I had a pc fling his shield at a npc from atop a castle wall three hundred feet strait up, while the npc was just trying to walk out the gate) I would be amazed if house rules didn't become necessary.
If however everyone is fine with the official rules then great! I don't understand peoples desire to interfere with someone else's game.
If you are playing D&D with actual fish heads and home made playing cards and everyone is having a great time, you are playing D&D right!
What rule did you create for the shield drop?