My parents won't let me come home late?

I go out with my friends sometimes and i come home usually around 1 and maybe sometimes 2 am. my mom tells me that i apparently need to stop coming home late because "i dont pay bills"... that dosent even make sense? she wants me to come home the latest 12 o clock but usually when im with my friends i have to rely on them to take me home and i can't demand "take me home now" to them because most of my friends dont have their own cars and things are not gonnna be on my mother's timing. it's not like im out running around with my friends or with boys doing innaporpiate things. we just had a big argument over this. she dosent shelter me in the home or not let me go out but she dosent understand what im trying to explain especially when in the past i have asked her to pick me up from a friends house or something and all she would say is no and i'd have to figure out how to get home on my own.
im 18 by the way turning 19 in a month, how should i talk to my mom more about this?
My parents won't let me come home late?
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