Homily gibberish from Catholic priests

What is it about some Catholic priests who don't put a lick of preparation into their Sunday homilies? Who go on-and-on talking irrelevant nonsense--who talk down to their congregation.

"my sister in law got notified by the credit card company that someone had fraudulently charged to her account. ... pray the breviary so that you can connect with Catholics who lived millenia ago. ... Listen! ... you need to focus! ..." 

clueless; totally clueless. 

one day a week--Sunday. your homily. your feeding the flock. and you don't have the time to prepare it beforehand? It's your job! DO IT!

• No, Father, it's you who needs to listen.
• It's you who needs to focus. 
• Focus on your job. 
• Focus on your weekly homily. 
• Prepare for it in advance (DUH!). 
• Stop talking gibberish. 
• Stop rambling. 
• Say something intelligent for a change.