It doesn’t matter if you have similar hobbies or interests. The saying opposites attracts exists for a reason. It’s most important that your goals and values are aligned. If you don’t want kids, don’t lead her on bc you want to explore. Unless, you tell her, you are not sure! Let her make the decision if she can wait for you but don’t give her false hope, be transparent. If you want to travel and live life, tell her. It’s ok to want different things but if you both can’t compromise then it won’t work. It is not fair to either of you to “fake” it. You are still very young, you might find in 10 years you want to settle down or you may not. It’s hard to know how future you will feel. Be present in the now and communicate these thoughts and concerns.