Bookies bet on soccer for one reason.
They make money from it. They do not do it to test their opinions, have fun or offer a service to their clients. All these may determine how much of a profit they make, but their primary reason to get involved is to generate cash. As potential bettors we do well to remember that. Bookies make their money from people who bet impulsively, who bet on their favourite teams as a way of supporting them and who do not think carefully about where they are investing their money.