Be sure that Biden is an awful human being. He might look good by comparison to his peers, but he's an awful human being.
He likely raped Tara Reade, he regularly sniffs little girls, he didn't back Anita Hill, he didn't discourage his son from being a deadbeat dad and didn't back the mother of his grandchild until his donors got on his case, his major legacy as senator is making student loans immune to bankruptcy, he was known as the Senator from MBNA, and he's backed catastrophic wars of pointless deaths in Iraq, Libya, Ukraine, and Gaza.
The notion of him being a folksy grandpa is propaganda. He's an awful man, a neocons warmonger abroad and a neoliberal economic fascist at home.