oz_mark has got a good idea on this.
If I have to travel for work, then generally if the flying rate gets intense then what pretty much obviously follows is that feeling of "getting sick of this". For my part, I haven't had a real episode where flying around for work purposes has gotten that insane. My first taste was my last trip over to the west where I had 5 flights in 5 days with full days on site. For some people that's still a pretty lame rate. But throw in the pressure of work and then it starts to stack up. (Work didn't always plan out, the last thing you need is your PER-BNE to be delayed and the QP runs out of decent booze, food and/or chairs. That kind of thing.)
So it can be understandable why some of us start to get sick of flying - aircraft (even premium class), air commuters, lounges (even premium lounges), etc. - because it may not be the flying but the additional pressures we face around that. When flying starts to go awry then the whole issue just intensifies.
For others here, flying for work also places some pressure on their families, so again the "last thing you want is a delay", etc.
Now compare this to a holiday where there is no external work pressure and (hopefully) the whole family is along for the trip. Even if there are delays, as long as they are not exceptionally bad, because there is no external pressures to cause exacerbation, we tolerate it. (Even better if travel insurance kicks in successfully.)
Still, flying is one of the easiest and quickest ways to get from A to B.
Worst comes to worst, have you considered cruising? Slower, more expensive, but a new perspective on travel (provided you're seaworthy)....
). Nightlife in Cairns limited but lively and vibrant. But what's even better was the fantastic and fabulous company of turtlemichael +1, and Platy over some tipples, an amazing Michelin-quality meal and some great convo. Thanks folks! 
