It's inherently classist. Only those with access to moderately high levels of technology can spend or receive it. Only those with access to exceedingly high levels of technology can "mine" it. Heterosexual, middle class or higher white males are disproportionally represented in the demographics of bitcoin users. Bitcoin only serves to uphold the current kyriarchal socioeconomic structures by making sure the privileged become more privileged.
And it's a terrible idea. You spend more on your parents' electricity bill and replacing burnt out GPUs that your parents buy for christmas and birthdays than you actually theoretically make.
Bitcoins are basically just this weird attempt by lolbertarian children to make their own currency and play stock market and dodge taxes.
1. Smartphone and internet connection these days are cheap and most people can afford it.
2. Mine bitcoin doesn't mean you always get profit anyway and there's many way to get/earn bitcoin.
3. Bitcoin don't make middle/high class people become richer, but those who involved in development or early stages are the one who will be rich.
4. Don't assume all of us are young people/child who still live with parents. Also, no one mine bitcoin with GPU anymore, only newbie or idiot who would do that.
5. Mining these days shouldn't be at our house thanks to chinise miners.
6. I doubt children understand concept of P2P/Decentralization and have programming skill such as C/C++ to create bitcoin-qt.