What are your thoughts and experience with ads to support the channels? I'm not sure that I could go back to watching US broadcasts in real time without a DVR t

What are your thoughts and experience with ads to support the channels? I'm not sure that I could go back to watching US broadcasts in real time without a DVR to skip the ~20 minutes per hour of commercials. US public television at least puts the non-content filler between shows, not in the middle.