Started flying in 1958- charter, instructor, major and commuter airlines. I cannot think of one reason I would want to use a pc computer as part of my (or a family member's) flight training program, even if it had been available in 1958.
Admitedly MSFS is pretty lame, but it does have some features, namely add-ons. Could be wrong but I don't think you can use the following programs with X-Plane: Flight Deck Companion, Radar Contact, Active Sky, PMDG 744, Level D 767, or Dreamfleet 727. I now use it for fun, nostalgia. A young friend of mine has X-Plane, and it is rather boring.
Bob.