Thanks for your thoughts on this!
I like my PC. I know my PC. I'm just getting some outside pressure to try something new. Using my son's iMac, gives me the same uncomfortable feeling, you're having with the PC, but I'd like to think that I could get over that, if I do switch over. I want to be adaptable. The one thing I've heard, that I want, is the Mac is more secure with online money matters, such as banking. Don't know if it is true, or not.
If you get a new PC it will be Windows 10, so on the guess you are currently using Windows 7, so you will have a little learning curve moving to a new PC. You would be surprised at how small the learning curve is moving to Mac. 5 years ago we needed a new computer and I wanted a Mac and my wife was reluctant as she had only used PCs. I won. Libby took a little while to get used to the different interface (a couple of months to be completely comfortable with it), and no longer has any problems with it.
Security was one of the things I used to sell getting a Mac. These days, it is a little more vulnerable, not because the security problems weren't there before, but the user base has grown so the effort is a little more worth while. The small user base of the Mac is a form of protection as the time to find and exploit a security flaw it roughly the same for both PC or Mac, but you have such a bigger chance of having success in the PC world because of the larger user base. As long as you are careful (don't click on links in emails, etc) both the PC and Mac are acceptably secure.
I would choose a Mac, but I am biased.
Deal breaker: If you want a touch screen desktop, Mac is not an option.