For Major League Baseball players, many achieve their lifelong dreams when they are drafted by a team, or when they step foot on a Major League Field, or when the earn their first hit or first strikeout. That is what they have been preparing for. That is their career. For this, many forgo further education or delay it until later in life after their playing days are done.
For others, the collegiate education is very important to them. It might be about further job security. Or maybe it is something as simple as following through on a goal.