The JSF is a peice of junk, there is a reason why the Harrier is the only VsTOL aircraft in the world today. The reason is that it is painfully simple. YOU HAVE TO KEEP IT SIMPLE.
The JSF is so complex, they'll spend more time in the mantainace shop than in service...
The Jaguars are all end of life now, the air frames cost a fortune just to keep them fight worthy... add to that they have never really been used properly in their intended role. It's plain to see why they want to get rid of them.
The buccaneer was an odd aeroplane, it under performed and no one wanted it... stick new engines in it, and it became the best low level laser guided bomb platform available juring the Gulf war.
Back on topic, did you know that the B52 will be 80 years old by the time they plan to retire it, I expect it will probably stay in service for some years after that too!
It seems inconcevable to me right now, of an aircraft that has been flying for 80 years and is still in a front line role... :-)