Yeah that's really my opinion now, that play control is extremely important and underrated. That's why Sega CD was so cheesy, you just pressed a button on the right time and that somehow signified OPEN TRAP DOOR or something.
you say that like it's easy
night trap is really fucking hard even with a walkthrough and it's almost impossible to get a perfect ending
Anyway, I haven't noticed a change in game difficulty at all, with the exception of quicksave making things easier than when there were save points (or NO SAVE AT ALL). Most games don't keep my attention long enough for me to beat them, but it seems like I give up more out of disinterest nowadays than I used to out of just plain being stuck. Besides those two things, games haven't changed at all for me, and they're equal on difficulty, but maybe not on INTERESTINGNESS? Only when a few gems come along do I even stick with those games and pay for them to begin with.
Also, as for playing games for the challenge, I only do this with games I already wanted to play. I won't play a game because it seems challenging (I won't avoid it either, it's just not part of the equation), but I may continue to play one if there is something I want to beat in it that I had trouble with and I manage to do it without it getting me too frustrated.