That's because vanilla sex isn't as stimulating. The more superstimulating something is, the more experiencing it causes you to want more of it.
vanilla sex isn't as stimulating
For people who are into one or another variety of kink, or would be if only they knew about it / were prepared to try it. I don't think it's obvious that that's everyone.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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