I have honestly never spontaneously let out a scream or anything near that level of sound, either as a child or an adult. I expect that'll make me really weird or strange, but it just isn't the way I express shock or any other emotion,
im actually a very emotional person but it tends to go on inside rather than being externalised. In fact, I'm now wondering how it must feel to let out a scream, I wonder if it goes back to childhood, because I'd never in a million years have screamed in the playground or in the street or even indoors at home. It just wasn't a thing in our family or at school, we were a very quiet bunch.
and as a gardener, I can't imagine being frightened by a spider, I've seen more of them in my gardening career than I've seen dogs or cats. But I appreciate people have a fear of them which I can understand as they tend to scamper around with legs all over the place. Now ...a wasp on the other hand 😮 aghhh, DH has to get rid of them for me, he grabs them and shoves them outside. He's immune from them!