In addition to thinking Trump is a power-loving evil genius, and that he's OK assasinating leaders of other nations and with using #NuclearWeapons, my guesses:
He thinks he's gonna live practically for ever.
The #PeeTapes, along with the most the rest of that stuff, were planted in the #SteeleDossier by Russia in a successful disinformation campaign. But "pee" was included as a mindfuck aimed at Trump. I suspect #1 or #2 tapes exist.