If someone doesn’t want to believe me, that’s their choice; if someone is down to reject what I say out of hand, I don’t want to associate with them any more than necessary, so I don’t really care if they believe me (caveat: sometimes it matters for an outcome, like if you need an absence at work or school excused or if you’re in court, but providing evidence is standard for those types of claims regardless of their reason).
If someone doesn’t want to believe me, that’s their choice; if someone is down to reject what I say out of hand, I don’t want to associate with them any more than necessary, so I don’t really care if they believe me (caveat: sometimes it matters for an outcome, like if you need an absence at work or school excused or if you’re in court, but providing evidence is standard for those types of claims regardless of their reason).