Comparing Better-Auth to Clerk or Auth0 misses the point entirely.

People choose Better-Auth because they want to own their user auth and users table themselves. Auth can be complex, but it's such a key and important piece of your business that outsourcing it to a 3rd party should be much closer to a last resort than a first impulse. If that 3rd party ever shuts down, has downtime, or your account gets suspended for whatever reason, users won't even be able to login to your app. That is a HUGE risk that I am not sure you are accounting for.