As far as THAC0 is concerned, I am an educator and mathematician. I know for most people adding is easier than subtracting, especially when you get into negative numbers like descending AC could. But does that make Ascending AC "better" just because it is easier? Not IMO. It is just a different system to accomplish the same goal. I mean, one of the reasons I am so good with maths is
because I played D&D from a young age on. I know kids who learned to understand negative numbers back in the 80's because of D&D and descending AC.
There are many times in life when easier is not better. Look at the cartoon you just posted. Is it easier to buy vegetables instead of growing your own? Certainly. "Better" is in ethe eye of the beholder. More convenient? Sure. I would agree with that. And Ascending AC is more convenient for many people, but "better".... that is a matter of opinion.