I'm really don't feel ready for a family yet, doesn't our biology suck?

I don't feel ready for a family at the age of 19. It's only been a year since my HS graduation. Sometimes I like playing video games, chess, going to movies with friends, reading books, going to parties, etc.

However, biology has it that I was fertile as soon as I got my first period. I was still 10 (2 months shy of my 11th b-day) and that to me is just a kid. I acted, played and talked like a child at the time. Then from that point, I start losing eggs... when I'M JUST A KID.

Then my early 20's are said to be the best years to have kids. So basically, I only have 1-5 years to be in the ''I don't know what I want. I'm not ready yet'' phase and then after ages 25+ (several older men start selecting 25 years and younger women to date) everything goes downward. I hate my biology. Doesn't this suck?
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I'll be turning 20 next year. That seems too soon to already be forced to mature.
I'm really don't feel ready for a family yet, doesn't our biology suck?
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