You are 13 and you are looking at a 30 years commitment, what if you go to college, what if you enlist, what if you study abroad, what if you move abroad then what???? Your parent's problem?
Grow up enjoy life free of worries and commitment (trust me those will come soon enough) and then get a good job, settle and get as many as you want.
That's what I did and I am grateful that parents were the voice of reason saying no to snakes when I was your age.