My dad won’t let me get a snake

I really really want a snake. I asked my mother and she said yes but I need to have a plan for it when I graduate and go to college. My mom told me to ask my dad but before I did she talked to him about it and he said no because he doesn't want it to become my family’s responsibility when I leave. However I still really want to have a snake and maybe if enough people support me he will let me get one.