I had the highest libido at age 5 and lost it completely at 20
When I was 5 years old, I, of course, didn't even know what sex was, that it was normal for a girl and a guy to get together naked, that girls had vaginas, etc. However, when I had my first girlfriend (yes, at age 5), my first instinct was to get her over to my house and sleep together with her naked. I asked my mum about it (although I didn't mention the "naked" part because I thought it was weird) and she obviously said no.
From that point on, I would spend sometimes hours fantasising about my various sexual desires every day, and the enjoyment that I got from these fantasies was so great that my number one goal in life for a good 10 years was to fulfil them in real life.
Unfortunately, up until age 16, I thought that my fetishes were extremely weird and that I would embarrass myself enormously by simply even opening up about them to anyone, so I kept all of them to myself. But, interestingly, if I knew that they weren't, in fact, weird, I would still be unable to do anything, because many of them included older people (age ~30) who would be considered [you know who] if they had agreed to do anything with me.
Then, from age 5 to age 16, my libido was continually numbing, until at age 16 the situation culminated with my depression which basically made me asexual and killed my libido for good. And now, at age 20, I don't feel any sort of attraction towards women (or men, naturally), either sexual or romantic.
Is this something that many people go through, or am I just weird?