Bitcoin did not come out of nowhere, it was the capstone on DECADES of innovation.
Bitcoin has not sat idly by for the last 15 years, it is the launchpad for future innovation.
This slide below was from the Bitcoin Alive conference in Sydney Australia, calling out a few of the key innovations that Satoshi beautifully wove into the tapestry that is now Bitcoin. His genius is in the design of Bitcoin and the addition of the Difficulty Adjustment for proof-of-work (mining).
One of the traps that people with a technical background have when they come to learn Bitcoin, is getting side-tracked by the technical innovation. This was certainly true for me. It is also what the altcoin promoters always focus on because it distracts from the key innovation that Bitcoin is.
The key innovation Bitcoin brings is ECONOMIC (verifiable absolute digital scarcity), rather than technical. The technical innovations ENABLE the economic innovation which is the primary innovation that Bitcoin offers.
Verifiable absolute digital scarcity is a discovery and can only be discovered ONCE. (Knut Svanholm talks extensively about this). Everything that followed is a variation of some form that essentially copies the technical innovations and tweaks a few elements (or just the marketing logo), and always ignores the primary innovation which is the economic innovation.
Bitcoin is the best savings technology that humanity has ever had: Learn Bitcoin.