One reason is that Bob Ewell needed to vent his frustrations, because he hadbeen embarrassed in court. Atticusfigured he was, in a way, helping Bobout. “Jem, see if you can stand in BobEwell's shoes a minute. I destroyed hislast shred of credibility at that trial, if he had any to begin with.
Alcohol is a dangerous substance that can take peoples lives. It may have some good outcomes, but nothing is worth losing someone you love; Alcohol abuse is one of the top causes of death, and it needs to change.
Hope this is sorta around what you need. :)
Motivation confidence and personality
I think the answer is b: spent his money without restraint