I recommend against hosting a password manager yourself.

The main reason is self hosted systems require maintenance to patch vulnerabilities. While it's true that you won't be on the main list if e.g. bitwarden gets hacked, your data could still be obtained or ransomed by a scripted attack looking for e.g. vulnerable VaultWarden servers (or even just vulnerable servers in general).

Using professional hosting means just that, professional hosting with people who's full time job is running those systems and keeping people that aren't supposed to be there out.

Plus, you always have the encryption of the binary blob itself to fall back on (which if you've got a good password is a serious barrier to entry that buys you a lot of time). Additionally vaults are encrypted with symmetric crypto which is not vulnerable to quantum computing, so even in that case your data is reasonably safe... And mixed in with a lot of other data that's likely higher priority to target.

I access my Vaultwarden server via Cloudflared tunnel while I'm away from home network.

If you self host bitwarden/vaultwarden, each client stores an encrypted copy of the database, so even if your server was completely destroyed, you'd still have access to all the accounts you're saving in it.

Lots of people like and recommend Bitwarden. I think followed by KeePass on second place.

I self-host stuff because I can, because I learn something while doing it and it gives me control. And I'm running that server anyways, so I might as well install one more service on it. If you don't want to spend your time managing and maintaining servers and services, go for the official (paid) service. That'll do, too.

If you're worried about your internet connection going down, either use a VPS in a datacenter or just use software that syncs to your devices. I think Bitwarden does that, your passwords will be available without an internet connection to your server. They just won't get synced until the server is reachable again.

Is there an easy way to export passwords from LastPass to another service, self-hosted or otherwise? I’ve been wanting to move away from my current manager but have been reluctant due to this.

you become fully in charge of your passwords instead of relying on someone else

TL;DR:

• you do it to gain more independence and self-reliance

I self host services as much as possible for multiple reasons; learning, staying up to date with so many technologies with hands on experience, and security / peace of mind. Knowing my 3-2-1 backup solution is backing my entire infrastructure helps greatly in feeling less pressured to provide my data to unknown entities no matter how trustworthy, as well as the peace of mind in knowing I have control over every step of the process and how to troubleshoot and fix problems. I’m not an expert and rely heavily on online resources to help get me to a comfortable spot but I also don’t feel helpless when something breaks.

If the choice is to trust an encrypted backup of all my sensitive passwords, passkeys, and recovery information on someone else’s server or have to restore a machine, container, vm, etc. from a backup due to critical failures, I’ll choose the second one because no matter how encrypted something is someone somewhere will be able to break it with time. I don’t care if accelerated and quantum encryption will take millennia to break. Not having that payload out in the wild at all is the only way to prevent it being cracked.

Firefox has a built in password manager, it is stored on each machine you sync. But to anwer your question any cloud stored data is vulnerable, so be sure your password manager supports other verification measures such as Yubikey as another factor of authentication

Why not a piece of hardware instead of self hosting, cloud hosting, etc?