Having a kid is probably the best way to prevent boredom for 18+ years
I bet a lot of people who have a kid, after a lifetime of not wanting one, do it out of boredom.
That's the only scenario where I could see myself having one, anyway. Watching movies, going out to eat, drinking, traveling 2-3 weeks a year, and various hobbies can only fill so much time and may eventually get old.
I live in a heavily baby populated part of Brooklyn and whenever I see infant strapped to a dad's chest, or a toddler in an $800 stroller, or a 4 year old on one of those stupid three wheeled scooters with a parent 50 feet behind yelling for them to slow down, or a parent cheerfully explaining something to a kid on the subway, my only thought so far is "NO THANKS"