An entertainer's reputation as a live act is the most valuable thing he or she can have. If people know you give good shows, you'll never be broke for the rest of your life.
Does having a wife and kids change your act? Yes, but only in the best way. It gives you weight and authority. It also makes you closer to the audience because the audience is married and has kids.
When you make comedy, you make it for the people and you try to have as many screenings and as many tests and you do focus groups and you read the cards and you try to give the people what they want in this comedy.
