Creating a sermon takes time. The message has to take into consideration the content to be studied, the person of the preacher that is in relationship with that content, the way in which it will be presented, the hearers (audience) that will receive that presentation, and then the compelling actions of the hearers as they leave and begin a new week. There is much of that, that I can control and some that I cannot. My job as the preacher is to take my part of what I can control and to give God glory with how I do that. So a sermon takes time to create. For every minute of talking time, there is probably 30 minutes to an hour of prep involved. So a it may be grueling to an adhd, insta-everything culture to sit through a 25 minute message at church. I guess I could say be glad you don't have to sit with me while I work on that presentation. In fact, the shorter sermons actually take more careful attention as any writer or presenter will tell you, editing is difficult.
Preaching is a craft. One that I love and that I love to work on and continually try to perfect. Any sermon I have ever written has never been perfect and never been finished. Of course in all reality (and I say this with all seriousness and the least amount of pretentious dramatics) God does the perfecting as it turns from thoughts, to words, to ear-tickling, to transformed hearts, to cruciformed actions. I take what I do seriously and I pray that God works miracles with my weaknesses and imperfections and that He is glorified.