I need to vent this because a lot of people I know in real life don't fully understand. I know some people will mock me here but oh well.
First of all, what I dislike is the empty stomach feeling. I know most people say the fear of it releases adrenaline, but I just clench up in terror instead, especially if I feel it over an extended duration.
Second, I have a strong fear of heights. This along with empty stomach feeling while looking down at the ground and going down 100 or so feet really fast is not necessarily fun for me.
However, I do not have any of these things on waterslides, probably because they are quick and not quite as focused on steep drops and such.
But I still hate most rollercoasters