Let me be blunt—BTC doesn't avoid DeFi because it doesn't want to play that game; it's simply never encountered a way to participate that it can truly trust.

Look at these past years: cross-chain bridges boasting "leave it to me," wrapped assets pounding their chests claiming "absolutely safe," custodial solutions writing whitepapers full of grand promises. But what actually happens? Bridges break and users have to cover the losses themselves, custodians run off with funds and that hits the news every other week, and when pegged tokens lose their peg, it's always the holders who take the hit.

So why does BTC cling so tightly to its main chain? It's not because of some outdated mindset; it's because it understands all too well—once it leaves that most secure chain, its fate is in someone else's hands. And those "someone elses," judging by history, are really not trustworthy.

It struck me as I was studying this: BTC isn't the most conservative asset, it's the one most afraid of being let down. At its core, this is a matter of trust, not technology.

I used to think BTC was stagnant because its architecture is old and it lacks scalability. But now I get it—it's not moving because it doesn't feel safe. It's like putting your money in the bank, not because you're too lazy to invest elsewhere, but because you just don't trust the alternatives.

Every cross-chain solution says, "Come here," but when things go wrong, the user always bears the responsibility. Who can accept that?

Recently, though, I saw a protocol with a different logic. It doesn't ask BTC to "trust some intermediary"; instead, it uses a mechanism that allows BTC to retain its native security properties even when leaving the main chain. This might be the first design I've ever seen that truly lets BTC "feel at ease."

To put it simply, all these years BTC hasn't been unwilling to participate in a bigger world—it's just that no one has ever truly taken responsibility for its security. Now, finally, someone has figured this out—not with empty promises, but with a mechanism that can prove its own integrity.

Once you understand this, you'll see why the BTC ecosystem hasn't taken off. It's not that users don't want to use it; they're just afraid that in the end, they'll be left to clean up the mess themselves.