Why do I get motion sickness so much easier than everybody else?

At the fair or at amusement parks, I can't go on any spinning rides or rides that go in circles or I will feel nauseous. I used to be able to go on those rides when I was younger. Did puberty change that? Or is it something else? All of my friends can still go on those rides and not feel sick, and I feel left out when they go on all the rides. I can still go on roller coasters and rides that don't spin without any problems. Why do I get motion sickness so easily?Why do I get motion sickness so much easier than everybody else?Some people just have it worse than others. It's just like height, genetically set. Some people are taller than you and it isn't because they drank more milk than you did. So you get motion sickness easier and it sucks, but some things are just the way they are. Even from a medical standpoint, an inner ear thing or the like would be unlikely without other symptoms. Doesn't hurt to get a check-up anyway.Why do I get motion sickness so much easier than everybody else?Some people are more sensitive to sudden motions, spins, etc. My little brother (who is 8) gets motion sickness worse than me. So I wouldn't think it's a puberty thing.Why do I get motion sickness so much easier than everybody else?Everyones different GENETICS