Like dflood mentioned,
some of people's issues may be partially due to cheap PC hardware. In fairness, you really can spend as much as you want on a PC but most people won't. If people spent the money (all of the money, not 3/4 or 1/2) they are willing to spend on a high end Mac and on a PC they would have a pretty great machine. They would also need to focus on better parts, not just faster parts, more memory and storage. Good power, good fans, cables etc. Apple certainly makes this much easier as they do the design for you. In many cases we are not comparing like to like.
I know very little about computers so ignore the above ramblings