Saving stored planes for back up and relief operations

I was recently watching some YouTube videos and reading of incidents involving PIA flights being stranded at unscheduled stops due to technical problems.
Not only was the plane unable to continue the flights due to these technical problems but the passengers on the flight were stranded along with the crew. Passengers expected to fly on the plane on the return journey on the plane back to Pakistan were also delayed for hours.

PIA was forced to send another plane with a relief crew to repaid the faulty plane and to pick the stranded passengers, only adding to financial losses by the airline.

I know it doesn't happen that often that a plane is stranded due to technical or other problems and is forced to suspend it's flight, but when it does happen the consequences can be devastating.

Using the PIA case as an example, it got me thinking why airlines don't used stored planes as backups in case a plane is stranded far away. Take for example Gulf Air's recent storage of their B767-300s to save maintainance costs. If I'm not mistaken, Gulf Air's route network is small so it did not need it's B767-300s.

But suppose Gulf Air had an incident of stranding the plane. A stored B767-300 of theirs could be dispatched to transport the relief crew and pick stranded passengers without diverting planes already in use and scheduled for other flights.

PIA also had temporarily grounded it's B747s to save fuel costs. While being grounded, the 747s should still have been equipped and left prepared to meet any emergency needs in order to minimize disruption.

PIA has a crew of experienced captains and crew members to operate B747s and to keep crew members of grounded aircraft types up to date, airlines should use flight simulators.

I've also read unconfirmed comments from various individuals that Qatar Airways plans on selling it's Airbus 340-600s as soon as it inducts the Airbus 380. If Qatar Airways was wise enough it would keep a few Airbus 340-600 for emergency situations.

This will help during unexpected emergency situations no matter how rarely they occur.

How to fly for fun without loosing money

Many aviation enthusiasts wish to obtain their private pilot's license and fly to live their passion.
The only problem is having a private pilot's license requires flying at least twice a month to keep it valid.

This obviously means spending a great deal of hard earned money with no benefits except an addition of hours towards your commercial license which you'll also have to pay extra for to get instruction and certification.

Some people are willing to waste this kind of money just to fulfill their passion. A simpler and better way to do this is to get their commercial license and their instructor's ratings.

Most people don't want to fly full time or even fly on airliners that are time consuming and require lots of work.

This is why aviation enthusiasts who prefer general aviation planes should opt to become instructors. Not only will they save money but can a earn a small amount from teaching even if it's not a whole lot.

Being a part time flight instructor also allows you to fly during the weekends or a few times a month and does not require full time flying.
I had an instructor one who worked with another job during the week days and flew on the weekends. As I remember, he did not want to be an airline pilot or transport people in any way. He just wanted to fly as an instructor.

Another alternate is to of course buy a flight simulator game set and controls but that means not really flying or feeling the forces of it.

This is my recommendation on those who want to fly general aviation planes for fun.