BavarianBoy- you really amuse me with your comments.
Apparently you think that airline execs just order aircraft because they like the pictures, or because the salesman was particularly persuasive that day. WRONG!!!
Airlines buy aircraft (or more usually these days, lease them) because they have done the sums and concluded they can make pots of money, taking into account fuel burn, performance, pax appeal, likely fuel price movement, and zillions of other factors.
In our company, the 146 has opened up a huge charter market- tour companies have woken up to the fact that, as we can get into small and difficult airports that Boeings and Airbii can only dream about landing at, we can get their customers to resorts and locations without resorting to long bus rides from the airport- by using a closer airport! The charter market is quite lucrative, by the way.
Finally... what fuel crisis? The 146 doesn't use a lot more fuel than a 737, and the RJX will probably use even less. Also, the 146 has more perfromance than the 737 where it counts- close to the ground. Ask a few 737 pilots what speeds they cruise at, you'll find it is little different to the 146...