I eat raw and not even pickled chillies in salads or on the side of a plate of other food at least as much as tomatoes the same way.
More often pickled, but that's largely for convenience, in no small part for extra vinegary flavour, and not really at all to make them more mild.
But I already said that above and you clearly don't believe me. I don't think it's uncommon either, fwiw, I'm not at all claiming to be unique or anything like it.
It was my grandma favorite snack. The hotter the better.
Conditioning is very powerful.
However, I've never seen anyone eat a raw beetroot. And of course, people don't put tomatoes in fruit salads, as the old saying goes - different fruit are eaten in different ways.
Yes, of course I do. What point do you think you're making?
We dip raw peppers into a hot pepper sauce. https://www.youtube.com/watch?v=Y-bwUP77ElM
It's not just varying levels of hot-ness that distinguishes them but a wide variety of flavor profiles and preparation techniques that enhance those flavors. Some peppers can absolutely be eaten raw and with seeds, others do well with drying and roasting prior to use, others are hot no matter how you prepare them and even if you remove the seeds.
I think the actual heat that folks react to is mostly just an acquired taste and NOT something that's been programmed in by evolution to keep humans from eating these things. You can get used to rather hot peppers, but even if you don't there's many which have a low-enough scoville number (in the 10000's), that the heat is controllable by using less and one can still enjoy the other aspects of pepper's flavor.
Also the majority of chili plants aren't actually that spicy.
The hottest chilli cultivars were deliberately bread because humans like them.
[1] https://www.nativeseeds.org/collections/chiltepines -- recommended, always have some in my pantry.
If anything, processes like pickling can bring even more heat out of a pepper