put yourself into the situation we are mourning, can you imagine what it means Hashems Shechina (holy presence) leaving klal yisroel & his Bais Hamikdosh on fire? can you imagine the simcha we had in the days when the Bais Hamikdosh was standing?
How would you feel if you saw on live video on YWN jewish homes C”V-during the gaza war-on fire? wouldn’t you feel bad & sad for peoples losses & hope no one was killed or injured C”V IN the fire? this is what we call the mitzvah of “nosei b’ol chaverio” feeling the pain of your brothers.
In truth you are right, we are now living in the new generation, where everyone is living in Denial without waking up & facing reality, we just wanna have a good time & don’t care about another persons sad situation (sickness, dept or any other tragic situation)