It's just with the price of fuel, this huge aviation boom that we're all expecting can't really be as great as what people are forecasting.
I know it's hard to believe as I'm having to ask this question, but it is really all I want and I would never be able to forgive myself if I didn't go for it and never found out. So, I guess I have answered my own question.
I just need to pluck up the courage in the next 2/3 years to actually go ahead with it and take the risk