I feel exactly the same about launched coasters. Ironically, my first ever coaster was The Hulk. I remember thinking during launch "OMG if all coasters are like this I already hate them!", but after the launch and first drop it was just greatly thrilling
Admittedly last time we went to IOA (and I've only been a few times over the last 10 yrs due to living in England), I didn't go on Hulk, only Dragons. I went on Mummy for the first time last time we went to UO and whilst I did find the launch quite intense, it was nowhere near Hulk and over much faster.
I do think I have a sensitive stomach, though, as I just can't understand how people love that sensation of the launch when I really don't. I think you can build up an immunity if you're going on coasters a lot - when we went to IOA last time, I hadn't been on a coaster in years and even Forbidden Journey made my stomach drop. After going on FJ, Hippogriff etc. my stomach hardened enough that I could go on DD, although I had a 10-min panic about whether to go on it, even though there's nothing I don't like about DD.
I think, for me, I probably scare myself more than the rise itself. I just work myself up into a panic even though I know I love the Hulk ride aside from the launch. There has only been one coaster I haven't liked at all - Saw over here in Thorpe Park. I don't know why, but I found the drops really bad! Perhaps due to going through the dark coaster part and then having to wait and go vertical; I seriously did have a panic then.
We're back in Orlando this September and I'm going through a should-I shouldn't-I panic about Manta having not been on coasters in a while again and never having been on something like that. Think I'm more worried I'll have a panic attack when we're tilted and on the hill!!