Final Fantasy 7 (which doesn't even seem like the "old" days of the PSX to me) seems way to recent for people to seriously call "the good old days".
I'm a gamer since the later Atari 2600 days myself.
One thing that did make me feel old recently was a conversation something someone was saying about Sony "stealing" their controller design from the SNES. Someone else said "How can it be stealing, if they just used the obvious, logical, layout?" (or something to that effect)
Then I started remembering about how the Atari used to have a joystick (a term invented by the pioneering efforts of immature airplane test pilots, FYI) that pressed down bent pieces of metal that were taped to a circuit board, to make connections (I took many of them apart, trying to "fix" them, after me and my brothers wore them out). And the stick was supposed to be operated with your right hand, with your left being used for buttons.
And then Nintendo came out with the NES (Famicom) and the almost-complete modern design for controllers. Crosskey on the left. Start and select buttons made of those rubber things used in TV remote controls in the middle. Similar buttons with hard plastic covers for the more used "A and B" buttons on the right.
Then Sega made their own crosskey, and put it back on the right side of the pad, for their "Master System". And put the "pause" button on the main unit, beside the reset button, like the switches of the old 2600.
NEC came out with their own controller for the TurboGrafx (PC Engine), and mostly copied the NES controller.
Then Sega tried again with the Genesis, but they still made their own version of the crosskey (since Nintendo had completely invented it) which, like the TG-16 and Master System, didn't seem to work as nicely as Nintendo's, but at least were honest. And they also went with a more "arcade style" 3-button layout. Which later changed to a six-button layout.
Then Nintendo came out with the SNES, invented the L and R buttons, and expanded their two-button system to a more comfortable four-button system.
Then Sony made the PSX. They took the SNES design, and made some ergonomic changes (which had been happening since the Genesis). They took the perfect mechanics of Nintendo's crosskey, and made it visually different with a tiny (and functionally useless) brace in the middle, so it looked like four buttons. And they doubled the L and R buttons! And renamed the others (with lousy names, that they seem to be really pround of).
Then Nintendo came out with the N64, with analog, and their "three handed" design (so you could use the analog to replace either hand). Sony added analog to their controller, but couldn't really do the "three handed" thing. So they just gave people double the analog sticks!
Then Nintendo came out with the Rumble Pak, so Sony added rumble to their controller (and made the non-rumbling analog ones pretty rare). And gave people double the rumble motors! One big, and one small, which gave it more depth, and made most people say that the Dual Shock was superior.
Sega evolved their six-button Genesis pad into the Saturn controller, and after the analog revolution they made a funky disc-shaped controller that they gave away bundled with Nights. Which evolved into the Dreamcast controller. Which was spray painted black, had half a tennis ball superglued to it, and became the XBox controller. Which was later replaced by a much better Japanese one.
That turned into a bit of a rant, didn't it? I think that was part of it. I've got all this rant-worthy info in my head, and some little twerp tihnks the world was born looking like it is now! That's what makes me old! I've gotten surly! Sometimes.
Another thing that made me feel old somewhat recently, was when I was first playing Pokemon on my old "original" GameBoy (I was trying to avoid getting the GameBoy Color, since I knew the "Atlantis" would be around eventually). I realized that the majority of the kids that were playing the same game were younger than the system I was currently playing it on. Nevermind the fact that they're younger than me. They're younger than my GameBoy!
Of course, for the most part, the fact that I'm still into videogames and cartoons makes me feel like I'm still a kid. Which really is kind of amazing, when you stop and think about it.