I agree. All of the claims about 'getting an education', 'get better prepared playing college',' scouts better able to evaluate talent',etc....... are all without merit. In fact High School NBA draftees have had a 75% success rate or better while 2,3 & 4 year college veterans have very very low success rates in comparison.
The following is one of the better articles dismissing all of the 'supposed benefits of college':
http://www.realgm.com/src_feature_article/165/20080409/a_76_percent_success_rate_not_enough/
Free marketing of young talent in college is one of the things the NBA wants & not the Players best interest ,but the Leagues. The NBA wants ready made superstars(with a ready made college educated fanbase of fellow alumni/fans) like Grant Hill who actually got the most All star votes as a rookie & even got more votes than MJ in only his second season in the League.
Basketball is a young man's game & NBA scouts have been doing just fine evaluating Players straight from High School(better than they do with college Players).
Mike Dunleavy even admitted in the above article that the increased NBA practice time , 15 mpg off the bench & a couple years in a long NBA schedule is a far better at developing young talent than 4 years in any college. He is not the only NBA insider to suggest this & the article basically proves it.