I just moved a transaction from Chain A to Chain B, and after signing and the popup appeared, I suddenly felt a tightness in my chest: who do I really trust on this “cross-chain journey”?

IBC message passing sounds smooth, but honestly, you still have to trust that both chains won’t act up, that the lightweight client/validation mechanisms are solid, and that relayers are honestly forwarding (they can't change the content but can delay you), plus chain upgrades and parameter changes might suddenly flip the rules.
As for various bridges, they’re more like changing vehicles halfway up a mountain: an extra contract, more multi-signature/oracles/admin permissions, trust scope widens directly.
Recently, new L1/L2s are offering incentives to attract TVL, and it's normal for old users to complain about “mining, selling,” but with more traffic, cross-chain activity increases, and the busier it gets, the easier it is to forget what you’re actually trusting…
Anyway, I now try to cross as little as possible; if I must, I break it into small segments, settle first, then proceed.