Because they want to become professional bowlers.
Professional Bowlers Association
The PBA (Professional Bowlers Association)
Professional Bowlers Association (PBA)
After 36 years of calling the action of the Professional Bowlers Association tour on ABC, Chris Schenkel signed off in June 1997.
Walter ray Williams
Many professional bowlers have sponsorship arrangements.
YBA or if you mean the Scottish Young Bowlers Association it's SYBA
Professional Bowlers Tour was created in 1961.
Professional Bowlers Tour ended on 1997-06-21.
The are about 300 professional bowlers in the USA registered with the Professional Bowling association, that has about 4300 members world wide. Bowling has greatly declined since its heyday in the 1970's when professional bowlers were akin to rock-stars today.
There is a Professional Bowlers Association which conducts tournaments and events for pro bowlers. There are also bowling leagues that allow amateur bowlers compete on lane conditions similar to what the professionals use during pro tournaments. At this time, there is no league specifically and selectively for Pro Bowlers.