1. Unrequited Love: Roderigo is in love with Desdemona, but she has chosen to marry Othello, a Moorish general. Roderigo's unrequited love for Desdemona causes him to feel frustrated, jealous, and resentful.
2. Lost Investment: Roderigo has invested a significant amount of money in Othello's military campaign, hoping to win Desdemona's affection and secure a wealthy marriage. However, with Desdemona's marriage to Othello, Roderigo's financial investment seems in jeopardy. He worries about losing his money and the potential social embarrassment that comes with it.
3. Social Status: Roderigo is a wealthy Venetian nobleman, and he feels that his social standing is threatened by Othello's presence. Othello is an outsider, a foreigner, and his marriage to Desdemona challenges the social norms of Venetian society. Roderigo resents Othello's success and feels that he deserves Desdemona more than the Moor.
4. Manipulation by Iago: Roderigo is easily manipulated by Iago, Othello's villainous ensign. Iago plays on Roderigo's insecurities, jealousy, and desire for Desdemona to further his own schemes against Othello. Iago convinces Roderigo to help him sabotage Othello's reputation and marriage, promising that Roderigo will eventually win Desdemona's love.