Traditional Investments v. Bitcoin

The way I see it, the ordinary person is forced to throw money at the stock market due to currency debasement. Either invest or watch your cash be devalued. The ordinary person does not have the expertise or time to carefully curate their investments. Hence, we have modern portfolio theory and dollar cost averaging. We take a portion of our wages every month and put in a diversified portfolio set up by financial companies based on what they think is optimal for our situation and collect a fee for their trouble. I like that Bitcoin alleviates this paradigm and see it as one of its best value propositions to society.

My question is, does traditional investing actually produce a ROI after fees, inflation, and taxes (even with tax advantaged accounts like 401ks and Roth IRAs)? I'm starting to feel like at best, I'm preserving the value I earned. Yes, you can outperform Bitcoin in the stock market. But not through MPT which is what most people, including myself, are doing.

What are the merits of traditional investing (MPT) over Bitcoin? Do you think traditional investing is being undermined by Bitcoin's value proposition?

I'm HODL on Bitcoin already. Just trying to see what place traditional investing has compared to Bitcoin.