There's definitely a genetic component. Genes have been identified (check out research from Dennis Drayna). But it doesn't follow a "typical Mendelian inheritance pattern". Meaning, in short, it's possible to have the gene and not stutter. Also about half of people who stutter don't have a family history. It can skip generations. It can appear in avuncular (aunts/uncles & nieces/nephews) relationships. Stuttering is considered a complex genetic trait. My grandfather stuttered, my dad did not. I stutter, my niece did when she was about 3, but doesn't anymore. My brother (her father) never stuttered. To answer your question, OP, your kids may or may not stutter. Also severity doesn't run in families. If your child does stutter you will be in a very unique situation of helping him or her have a different experience of it. You can help them face the difficulties with supportive and helpful coping strategies. Remember, you never know what you're going to get when you have kids. They very well may have other physical or mental health or neurodiversity challenges. They may have ADHD, Down Syndrome, Autism, dyslexia, learning disability. We all face difficulties and have things to overcome in our lives. How we face them determines whether we have a positive or negative outcome. If you want kids, don't let the possibility of stuttering stop you.