Looking at the number of games from the 90s or even 80s listed by people, and how few are released in the last 15 years or so, it really doesn't seem like an old computer would be a problem...

True, the old games aren't usually a problem, but not everything posted is old, and old is relative. :) A couple of the ones wcdeadpool posted after your post are beyond my computer's abilities, for instance. Witcher 3, the aforementioned Skyrim, and one or two others. Skyrim and Witcher 3 are both ten or more years old, but newer than my computer.

Pretty good list... With the exception of Thief 2 over the original. Maybe you never upgraded the original Thief to Thief 2 assets.

GTA also is a big no. Could never get into GTA as the premise was pretty dumb. Not as bad as the Assassin Creed series, but still pretty bad. Don't understand the appeal, but each has their own favs I guess. After you steal something big in GTA, what is left? Boring. Maybe it is the open world, but again, I couldn't get into it. Maybe if you are attracted to slutty women, it would appeal... Just grasping at straws here. Has to be the attraction of being bad that you cannot be in real life... But I don't have that personally.

Assasins Creed. Has to be the dumbest story the has popularity in history... Now I did beat the first one, but only because I was bored at the time... Taking over a relatives body from the past. Wow... Did they employ 5 yr olds to come up with this? Have these people never heard of time paradoxes either? I could feel my intelligence slipping just playing this thing.

I have replaced so many computers during my upgrade that disappointed me, that I would be far more happy to have given it to a stranger... My last one was an 3700X and a 2700 RTX. All wasted as I don't think anyone is even using it. One previous to that was an i5 and a 970 GTX and I am sure that one was sold to buy a Surface tablet... Ugh.

I am done giving away systems to people that don't appreciate things. Would be happy going forward to give these things to complete strangers.

Heh. My computers always get lots of appreciation from me. I bought my first one in 1996 or 1997 with money from my first after school job during high school. Including that one, I have only ever owned three computers, and one of the three I used until it literally died on me when capacitors on the motherboard began to fail.

In all three cases, I have gradually upgraded every component I could until I couldn't go any farther. The restriction in every case has ended up being the motherboard, and I get to the point where to upgrade any more I'd have to replace the mobo, which would end up requiring me to replace at least one other major component (typically the CPU and GPU) as well.

This is where I am with my current roughly 15-year-old system. What the motherboard will accept is limiting me on any further system upgrades, and as has been the case almost my entire adult life, I don't know when I will be able to replace the entire system. My disposable income is limited, especially since I keep having to make fairly significant repairs on the car I'm almost done paying for.

At least I have recently learned that refurbished systems are much cheaper than they once were (years ago, refurbs were almost as expensive as new systems), so what will probably end up happening is instead of buying a new system, I will replace the 15-year-old one with one that is probably in the range of four to six years old. Still out of date, but a big step up from where I am now, and far more affordable than buying or building an all new one with more recent components.

I'm hoping to be able to do this by the end of the year.

Completely agree and would still argue its unrivaled, at least in its own series.
KH3 seems to have improved significantly in the boss area thanks to ReMind DLC but the fundamentals arnt there like in KH2 (no defensive magic like reflect (KH2) or aero (KH1), guard iframes still being wonky, physical attacks being very weak compared to other options, no iframes on finishers, etc. Other entries have harder secret bosses (Mysterious Figure from BBS) but that was due to them being broken imo. Its a great series although the mix of final fantasy and disney seems to be a turnoff for many as well as the complicated lore.

I heard mixed things about FF16 (that its too easy although the argument could be disingenuous since there are auto-dodge/auto-guard rings for "accessibility") and FF7 remake does a great job although its different from KH.