IM FIANALLY ENGAGED!!!!!!!!!!!!!!!

Im finally engaged!
For the very first time in my life,
something that i wanted to happen since i turned 16 is finally happening.
But then i realized that if i get married at this age,
I'll feel weird because my sister\'s are older then me,
and there not even married yet.
But yet again if i get married, i wont have to put up with
my father again and all his abusement and his cursing,
But the problem is, is that a couple of my friends say
"Don't Do It" and then my other friends say "Do It"
I dont know what to say or do.
Both my heart and mind are telling me to do it,
but im not sure no more. I was the moment he asked me,
but then im like i dont know.
Why do i have to be 17 why couldn't he just proposed to me
when i turned 18.
WHY DO I HAVE TO BE ENGAGED!!!!