I'd like to tack on that this point can be used to highlight why this is so. It's a deep concept that can be explained simply and produces a lasting positive impact.
Everyone has fantasies. Sometimes we want them to be realized. Most often: we don't. Many people carry internal shame because of their fantasies and some of those people have difficulty with intimacy because of it.
Good sex with other people requires our investment in their comfort and pleasure. This can be emotionally complex and fulfilling to navigate. Masturbation is free of those complications but we often make up the difference via fantasy. This is normal and there's no need to confuse one space for the other. Masturbation and sex may fulfill similar basic needs on the surface but, in practice, they are very different exercises. It's normal for one's preferences to be different for each and for those preferences to shift over time.
Don't worry about "normal". Focus on having a healthy, honest, and emotionally aware sex life instead.
Fiat currency is just as silly. As is all money, really.
"I trade numbers for food. The numbers are accessible via a magnetic strip on some plastic in my pocket." or "I trade paper for clothing but the number of papers isn't as important as the number printed ON the papers." Both of these realities are absurd. :)
As a store of value representing labor rendered: neither of those are terrible systems and most people don't understand either of them anyway. Fiat seems "normal" because we grew up with it. That said: I'm no apologist. Popular crypto currencies offer little novelty for the layperson, no true improvement on the concept of currency generally, and cost orders of magnitude more to maintain their required infrastructure. I fail to see the appeal.
There are some projects which focus on the practical utility of decentralized currency (I remember thinking Nano (wikipedia.com) was cool back in the day) but they don't get the same kind of attention as meme coins because they can't be abused as easily. I've heard stories of these kinds of tools facilitating commerce in places where the local currency collapsed. Neat as that may be it isn't revolutionary... Still more convenient than bartering via cigarette though.