Why everyone wants to do CA,MBA,BE when there are 3000 or more

THERE ARE 3000 VOCATIONAL EDUCATION AND TRAINING PROGRAMMES IN 15000 MODULES - OUR GOAL IS TO COMPILE AREA WISE SAY MAIN AGRICULTURE SUB DIVIDED IN TO SEVERAL CATEGORIES LIKE SOIL MANAGEMENT, SOIL DEVELOPMENT, WATER SOURCES DEVELOPMENT, WATER PRESERVATION, WATER USAGE, LIKE WISE FERTILIZER, CROP, ETC.