I'm finding it's not the years, it's the mileage. Indiana Jones said it best.
The mileage used to be a fun road of gaming and equal parts finding and discovering stuff. Things in the last five years in particular have become worse and worse from multiple angles. If you're a classic game player, Nintendo predators make that an un-fun mess and various others like the TG16/PCE, Sega CD/32X/Saturn stuff greatly so, and a few other screw ball things. I mean seriously, now that I'm schooled on what MVS carts (Neo Geo Arcade) go for it's nauseating what was once considered 'the expensive shit' now look like a deal.
Then you have the modern stuff, greatly so the MS and Sony stuff, though Nintendo has their own issues too. The first two clowns push out crap 90% of the time before it is done using people as $60 guinea pigs -- bullshit on that. All three of them are living off franchises but they're all taking them down a darker road where it's a prettier package with a crappier or at least more boring/contrived re-run under the surface. You have MS/Sony doing the me-too games in some shoving match, and Nintendo decided to go sit in a corner and put one thumb in its mouth and suck it while shoving the other in their ass and spinning on it considering they're deaf and blind to the complaints, yet offer people nothing worth buying unless it is there stuff and they wonder why the WiiU rots on the shelf.
3 Years ago now I came to the conclusion that I can't play in this pond as much anymore, and progressively it is now to where I can't tolerate it much at all anymore as a generalized blanket statement. As it stands I have 15 3DS games and 10 for the PS4. I should have more, but the games aren't that good and I finish them and dump them for another except a few, and even then I really haven't rolled over that many titles on either so it's not like I own 10 but sold 30 which isn't the case. 2 days later, still Uncharted 4 sits wrapped up and I know I'd enjoy it, but I have no care to open it now. Why? I could guess, but I'd rather not. Truth be told I get more fun out of non-touch based bite sized stuff or at least portable stuff mostly now with some PC thrown in. I'm more into the non-standard stuff like my MVS cabinet and Pin-Bot than the traditional. If I go down the normal road I have DOOM 2016 going on PC, and I'm screwing around really just with Gameboy and Game Gear stuff passively because I don't want to deal with it anymore.
That's why I'm selling off my collection currently as far as about 95-98% of it goes that I didn't buy up before the year 2000 as far as consoles go. It doesn't mean I'll dump it all, nor does it mean I may not want Goemon's Great Adventure for N64 some day again and just grab it, but I've pushed the Start Button to pause this game for now. Maybe my mood will improve, maybe it won't. I'd rather get rid of the unused stuff if it's gaming or whatever, and throw it towards something I can use like some MVS carts for my Neo Geo, or if I can ever track it down Konami GB Collection Vol4 (UK GBC) for Gameboy Color.