Obeying the Word of our LORD is not a waste. Hating the traffic is not going to get you home any faster. If so, they you are allowed to be angry, however, sin is not permitted. There is nothing wrong with being angry. Although, you are confusing hate with anger.
Hate is unnecessary.
Hate is commanded by God. What is accomplished is that believers will receive His blessings by obeying His Word. When godly people protest against sodomites, murderers of the unborn, adulterers, those who have taken the LORD's name in vain, etc, their love for God is shown through hatred of what God hates. No it is a wedge that splits wood. It can be driven, and cleave what was once whole into two.