I'm surprised

The other day when I flew down to Hong Kong I went to the cockpit to say hi to some pilots I know but the strange thing is that the one was practising for his landing at Chek Lap Kok while the other was racing their actual flight.They both had the PSS A340 pro and MSFS 2004. When I got back from Hong Kong I stayed at home [Mauritius] and after a few days I flew down to London. The pilots on that flight were also playing the flight simulator [I'm surprised]. When I was back at my seat I started to wonder why I wanted to fly the simulator when actualy I was in the real thing [A340-300].The thought doesn't last to long when I start looking

❓ ❓ So I'd just like to ask if you guys ever started to want to play on the FS when you were in an actual plane, why is it that I [or you guys as well] want to play the Flight Sim when I'm [or you] in the actual Plane and why do pilots play the game when they are busy flying an actual plane. ❓ ❓