Commercials are an important part of the TV business. As I understand it, TV survives thanks to advertising. I think TV commercials add color and humor to the normal programming. I saw a very funny ad about security in which a man was trying to prevent someone from stealing his car. He put chains on his car and went to a party, but someone took the car away from him, chains and all.
Radio commercials can also be funny and entertaining.
Without them, we would have more music, which is very nice, but then we wouldn't be able to hear about traffic situations and sales in big stores. I think we need commercials, just not too many.