OP = PPL? Seems to be more than yours?
Think again. But I don't really want to get more engrossed into this debate.
There will always be two camps to this debate, but personally, with the benefit of an IT background, I know the hard fact is that given the limitations of your average home desktop PC, you're never going to be capable of making anything more than a glorified game. Even you yourself are not treating it as more than that by popping out to the shops leaving it running.