Actually, Jake, this last post was very helpful. I just wanted to know whether Yosemite would make things better, worse, or stay the same. Given what you've said, I'm just going to leave things alone for the time being.
As to going back to PC, please understand that I'm really on the horns of a dilemma here. On the one hand, my IMAC hardware has been rock solid which is more than I can say about the PCs I owned before. I also really appreciate the fact that I've never installed any sort of anti-virus protection and have had no problems. Every time I would be in an Apple store and would ask them whether I should, they always advised against it. The general performance of my IMAC has been very satisfactory but it's not been perfect.
I still don't quite get the file management system. Documents routinely, not always, go elsewhere and I have to search for them. I'm not great at this stuff so I suspect that it's more me than it is the machine. I also wish that I could find some simple architectural drafting software that is either free or real inexpensive which I could find with PC. All the MAC stuff is either more than I want to pay or too convoluted for my little mind. BTW, the reason I bought MS Office for Mac was because I knew how to make it work for me and I knew others wouldn't have any compatibility issues when I send them stuff for my business.
I've been looking at options and while it would be a bit cheaper to go PC, by the time I add in a monitor it doesn't really amount to that much for a lower-end machine which will more than satisfy my requirements. I think the new mouse is way cool although I do like the auto scroll on the MS mouse I'm using now.
Thanks again for your interest and please accept my apologies for my thin-skinned reply.
PS. what about those Clean Your Mac pop-ups and ads all over the place? Any value or just another scam?