mod39- you really got me thinking. So- how do we apply the moshol?
Since you ARE asking me. There is a difference between physical and spiritual. One should not be happy when spirituality takes a hit. We mourn the loss of a gadol because he not being here will possibly hinder our spirituality. We mourn the destruction of the Beis HaMikdash because it was G-d telling us our avoda was no good to him.
[Side Point: One cannot be jealous of their friend or their possessions, but they can be jealous of their Torah]
What feivel said in the Original Post was 100% emes. The moshol is also correct, just not universally applicable.