Nah, I sitll say its down to the individual as to how they feel their system is as good as they need it to be, or want it to be.
I used to have a pair of Yamaha Monitors way back when I could hear properly, these were a simple 2 speaker setup.
Now, many scoffed at them because they didnt look the past, or because they were white or some other stupid reason, but one fact remained...
They are studio level monitors, and as such no standard home hifi came close as to the quality produced from them... ( Take the word Standard with a pinch of salt )
From about 5 years ago, until fairly recently ( about 2 maybe ) I had been using a standard 2.1 setup by KTX and I picked these up for a pathetic £10 and they were used primarily as a quick fix while I got some newer monitors, but to be honest, they did such a good job, I never bothered until only last month, when I finally got new ones. Yamaha again, this time, I got HS80M Monitors...Very nice. Not the best, but I dont want to overspend this time.
They are only a pair, no sub. They have a tiny tweeter, and a full range speaker, and I do mean full range, as the sounds produced from them, are crystal clear, and well below and above the wifes £1300 Denon HiFi.
I have to say though, that I would never use those on a PC... Its a waste of time for me.
I am currently using :-
Altec Lansing 955 - Main PC
Altec Lansing 251 - Game PC in the LAN Room
JBL ESC230 - Wifes PC in bedroom
And a few other misc piles of junk on the others.
The Monitors are connected to my Atari & Midi Gear as I use those for my real music.
That said, the PCs do have extremely lovely sound, especialy the 955 setup, and they are all better than a lot of supposed HiFi ( As in cheap stacking stereos rather than true HiFi )
Again, a lot of people simply dont really know or even care about true HiFi, so again, its really down to the individual.