A question for all teens ttc-why do you want to now instead of waiting?

cat • mama to 3 earthside, 2 angel babies. Pregnant with rainbow twins due April ‘25. 💜
Just curious because I really dont understand. Maybe I never will but im 15 and a sophomore in high school. To me, trying to conceive when youre 17 or younger is too young, no matter the circumstances. IMO. 18+ okay yeah youre out of high school but why not wait a few years?