Having decent password hygiene, password rotation, secure password generation and all of that available via browser, apps and commandline IS a no brainer to me.
From a security standpoint you could say they are storing and keeping your passwords all in 1 bucket, while that is true it is encrypted and can be changed / tracked way easier then you would be able to without it.
What's the alternative? Keeping those passwords in your brain and create variants on that password? Sticky notes with passwords?
What about a NEED to share passwords with team members securely? Do you send them over slack / imessage / whatsapp?
Next to that it also functions as a database of accounts where you can see where you have an account with a password that has potentially be leaked and for "known" big providers they forward you to the change password screen in an instant.
To me having a proper password management tool that warns you if any of your passwords get leaked is really worth the price they are asking. Without it a lot of best practices often get lost due to time constraints.