If you were starting from scratch, you’d have nothing to lose. (Of course, it’s the same for Mac users going the other way, which – despite your daughter’s claim – some do.) If you are “a very normal PC user” then switching to Mac OS X would involve some relearning.
However, people tend to like what they know, and they are generally averse to change. Since you don’t appear to have any specific requirements, and you haven’t given me a budget, you will have to decide.
That’s a very unusual question nowadays, but the stock answer remains the same: pick the one that does what you want at a price you are willing to pay.
I bought an iPhone 5c and sold it after two months Ugo My daughter says “when you try Mac, you never come back”. The question is the usual: PC or Mac? I am a very normal PC user.