[jeroenhd]

Maybe it's different for you, but I don't think any three letter agencies have some kind of TPM backdoor (they don't need to with how often TPM chips end up being vulnerable to common software exploits, the firmware being written in unsafe languages and all). If a government was going after me with enough force to use their TPM bypass trick, I'd probably be in jail for years on fake allegations regardless of encryption status.

TPMs work great against things like common thieves and probably corporate espionage, if set up well. When implemented well, they provide no additional friction (except for having to store a recovery key somewhere) but all the security against a laptop being stolen at the airport you could wish for.