Absolutely.
IME – Part of being a responsible adult is recognizing what you really want to dedicate that responsiblity to for the rest of your life.
Part of being a responsible parent is dedicating your adult responsibility to the health and wellbeing of another whole human being, and to raising that human being to likewise be a responsible adult. It's the least children deserve – they don't ask to be brought into this world.
If you recognize that is a path you neither want nor feel equipped to dedicate all your life to, the best and kindest decision in the world is to choose not to do it.