Silly things about it are what really put the icing on the cake for me -
The way you have to actually land properly - sideslips and flaps, bounce if you drop it in too hard.
RTB'ing with an empty buff in a wonderful sunset.
Trying to keep a fully loaded Lanc flying as you drag it off the end of the runway (no I won't use auto take off either).
Lots of different things...
And whats even better is it's run by real people you can talk to and who talk to you as a person not just an account number.
For me this is a unique ... errr.. product is not the right word ..... errr... experience.
Sparks
Seeing those hit sprites thorugh your gunsight is also the dogs whatsits
.