Look at all the wars and everything happening out there, what is the main root cause? Money obviously.
Many people get addicted to gambling because they want more money but instead of gaining money they usually end up losing their money and it makes their lives worse. People become jealous of others who have more money and they become depressed. They are jealous of people with bigger homes and luxury cars but many of those people are in debt for life. Money basically controls peoples lives. And that is why its the root of all evil pretty much.
When we have a lot of money, we should never feel arrogant and arrogant, we see a lot of things when someone has a lot of money, they feel like they are the greatest, that's why money is the source of all problems, it depends on us how to manage it well so that we don't become arrogant and haughty person.