Play however you like. I don't think a lot of games were intended to be blown up to 4k or even 1080p. You can wind up seeing stuff that the devs never intended. For example; I personally don't like seeing the entire model of my trainer in 4k while playing DS or 3DS era Pokemon games. And I don't like seeing raw pixels in my games, even though I accept it as a legitimate choice. 

Props for sticking with emulators for discontinued hardware. 

Also I wish I could give you a personal tour of my setup. High end CRTs, and upgraded cables do wonders for older games, while keeping the  original. 

If you can find a good PC CRT I think using CRT Emudriver to send something 1280 or 990 (or whatever resolution those 2004 PC CRTs did) would be worth your $50-$150 spent.

Also if I  were to play anything upscaled it would be Perfect Dark multiplayer, because the native resolution on N64 split screen isn't even 480i. And pumping it through CRT emu driver to a 720p resolution would be sick! 

Self driving cars do actually require AI to become fully capable under all conditions so that'll be how they'll eventually become the standard. In general though what I was getting at is I'm sure you wouldn't consider it unethical for people to use the technology to drastically improve their quality of life thus another example would be the people who have used it to figure out what rare illness they have when all the doctors they saw weren't able to so that got me wondering what the line could be. If you'd rather not answer that's fine though and we can just leave it there.

They don't need to be that autonomous. For that matter, why make an autonomous car at all? Just make a car a disabled person can drive.

Let's say you cure a disease by experimenting on people without their consent. Technically, yes, you cured a disease. But the process you used to there there was unethical; in this case, you could and should made the same breakthrough in way that didn't fund and support AI's numerous harmful applications.

With that said, AI has never cured a disease, and there's no guarantee it ever will. On the other hand, we've been curing disease without it for centuries.

The end goal there is to save hundreds of thousands of lives each year since drunk drivers and bad drivers in general cause a lot of deaths and they're already a lot safer than the average driver. The idea that it'd be unethical to use AI to cure diseases if it becomes capable of that and that it's currently unethical for people to use it to massively improve their lives through helping them find out what rare disease they have so they can get treatment for it is wild to me since I really do feel like you can't get more ethical than those sort of use cases but if that is how you feel then we will just have to agree to disagree on this. If I've misinterpreted you here I apologize but otherwise have a good one.