Well, like you said, yes I am young; And currently I would never want kids in the future.
Though, can I speak for the future? No

I might change my mind, I might not
I want to be my own person and not just a mom in other peoples eyes
This is my opinion/experience about having kids.
I knew from about age 12 (before I even started having periods) that I did NOT want to have kids. A friend of mine in school told me, in a very matter-of-fact voice, "Oh, you'll change your mind." Sometimes I think I didn't to spite her.
No, not really. I KNEW I did not want to have kids. I did a lot of baby sitting during high school, and had great kids to watch, and not-so-great kids. I told my mom that I hoped she'd be happy with the grandkids she got from my sister and brother, as I wasn't having any. She said, wistfully, "Oh, but you could have a little girl like Stephanie..." (one of the sweet kids I watched). I answered, "Yeah, and I could have a little boy like Mike (my psychopath cousin). She answered, "Good point," and never mentioned having kids to me again.
[This cousin is a whole 'nother topic; suffice to say that I am truly glad he does not walk this Earth anymore.]
I knew from an early age that I wanted to have a career, and that was more important to me than having kids. As I told people, "You can get a divorce. You can surrender a pet if that relationship isn't working. What happens if you have a 3 year old child and realize that having kids was a mistake?"
"Hey, I thought you had a toddler! What happened?"
"Oh, we weren't getting along, so we split up." Society would not look kindly on that.
I've had a coworker say, "You're just too selfish, that's why you don't want kids."
I looked her in the eye and said, "Yeah, but at least I know that about myself and didn't have a kid that I didn't really want!"
Another one said, "What are you gonna do when you're 45 and get lonely?"
I said, "I'll get another dog."
I do NOT think having children is a requirement for someone to "be fulfilled."
Sorry if this is a rant, but I have been on the receiving end of scorn for "being too selfish, being less of a woman," for not having kids.