I did the same as a kid
Sharks, dinosaurs, tanks - I looked at "what did you want to be when you grew up thread - thought about it for a minute and had about 50 responses in head - thought fuck that and stayed away.
Honestly its one of the better parts of being autistic. You get to try a new drug every few months. It's fucking amazing to be honest, if autism was a drug you could get on once a month it would be a big seller.
So far this year I've gotten on, philosophy, psychopaths, polish, medieval trades(stone mason, black smith, shipbuilders etc), asteroid mining, star trek, and survivalist culture..
The problem with autism isn't that your not getting a good trip, it's that you can never come off and just be sober. you live chasing one interest high after another with everything in between(friends, girls, showering) being uninteresting and boring.