An NCAA tournament is a hot, torrid affair, a fling. You waltz in and scope out a bracket, pick a team that looks good to you, stay with 'em until they disappoint you, and move on.
But a baseball season, that's a commitment. You can't be casual about a baseball season. You have to invest. You fly on the highs, sure, but you ride out the rough patches, too, and you're there in the morning, every morning.
It's not a relationship to be entered into lightly.