This is one of the better gens of gaming I have been through, and since I have been playing video games since the early 80's, I have been through about all of them. Anyone thinking that older generations had hit after hit is kidding themselves. Super Nintendo gets a lot of love from folks for example, some stating it was the best console ever, however for every Super Metroid, there was a Bart's Nightmare. For every Final Fantasy, there was a Ren and Stimpy game.
This gen has produced many quality games in rapid succession. Were the older games harder? Sure they were, but they were hard for all the wrong reasons most of the time, hard for reasons that gamers Today would complain about to no end. No save system for most games, cheap deaths, off screen enemies shooting you, limited lives, no continues, broken enemies, horrible controls, etc. How many times did you do a screen transition in the original Legend of Zelda, only to be placed directly upon a randomly generated enemy? How many times did you have to try to do a proper series of wall jumps in Super Metroid to climb out of a pit because the controls just weren't responsive enough? There are many more examples, but you get the general idea.
You want to make current gen games harder, this is what you do. Turn off the hint system (if you are able to) right when you get the game, turn the difficulty all the way to highest setting, TURN OFF AUTOSAVE AND DON'T SAVE YOUR GAME. When playing RPGs, never level up your skills and don't get any better equipment. Games are only piss easy these days because you would complain if they were too difficult on your anyway. *points to Yahtzee's review of Demon's Souls*.