In The Catcher in the Rye why did bob Robinson have an inferiority complex?

Bob Robinson had an inferiority complex because he was constantly being compared to his successful older brother Holden, who Excelled in academics and was well-liked by others. Bob felt inadequate in comparison to Holden's achievements, which caused him to doubt his own self-worth. This feeling of inferiority led to Bob developing a sense of insecurity and self-doubt throughout the novel.