Computers and bitcoins are two totally differen things

so to make that connection that this can grow to be the leading currency isn't a good analogy. What good are bitcoins as a currency in Africa if it can't trade beyond it's border? Is there any physical wealth backing it up? If a bank won't convert it to cash for you, what value does it have? Once it becomes regulated (no banking system will trade in uncontrollable and unregulated currencies) it become the same thing we have now.You'd do much better mining for gold then bitcoins, as with the fist it is a tangable, physical medium that fluctuates in price.

Bitcoin just needs to pivot

As most entrepreneurs know if people think your idea is crazy you are probably onto something. The companies that are emerging around bitcoin usage should look to other markets. Like countries that have unstable governments, like areas in the Middle East and Africa. Bitcoins would be appreciated more there rather than the country's own currency due to the governmental uncertainty. Emerging markets might also be a good place for bitcoin. They might prefer a currency that already has unique markers and system for identification. Areas where they bank just using cellphones might also be a good niche market for bitcoin. It might have been dealt a blow by the Silkroad closure, but it is not going away. Remember that Apple's first computers were crappy children's toys but look at them now.

Secure against what? Against random hackers trying to steal your coins, they are pretty solid. Against malware that compromises your PC, they are designed to be highly resistant. Against disassembly and hardware hacking of the device, possibly not so much. Against rubber hose cryptography, not at all. They also can't prevent you from sending your coins to an address given on a spoof email or web page (although fiat bank accounts aren't immune to that either). You also need to think carefully about writing down the device seed and then keeping it secure; if someone can steal the seed they don't need the device.
(Actually the Trezor, and possibly other devices, do have a defense against rubber hose cryptography: you can have an arbitrary number of secret passwords with other wallets behind them, and the attacker has no way of knowing if you have revealed all of them. But then maybe they just keep on beating you to be sure)

No. The most glaring defect of hardware wallets is the presence of the physical device itself, which identifies you as an owner of bitcoins. It's like painting a bullseye on your back. How can you answer “What bitcoins, sir?” to the customs officer, when he's looking right at your Trezor or Ledger device? Or to your nosy neighbor? Or to the random house guest?
Use an online/offline software wallet with freely-available, open source code. Never put your keys on a network-connected machine. Sign all your transactions offline. Memorize your seed mnemonic. That way, wherever you go, your bitcoins go with you. Invisibly, without leaving any physical trace.
Once you've arrived at your new location, buy a Raspberry Pi and an SD card and download and install the wallet software on it for use as a signing machine. Sign transactions using your mnemonic, so your seed is never stored on any physical medium. Run a full node with a watch-only wallet for broadcasting transactions and tracking your balances.
Difficult? Yes, but true security is always difficult. All the “easy” solutions involve relinquishing control to some trusted third party, and reliance on third parties is exactly what Bitcoin was created to free us from.

And don't tell anyone, not your wife, not your boyfriend, not your siblings.... No one!