I think like most musical savants, his personality was a bit off-center, which probably made it difficult to have long-term relationships. If indeed he has literally thousands of songs in his vault, he probably spent most of his time making music. With folks like that, it’s their addiction, they can’t stop doing it.
Like Mozart hearing music in his head all the time from the Amadeus movie. Prince was also a recognized musical savant at an early age.
I heard an interview with his first manager today. The host asked him what Prince did in his down time. He said, “Really, nothing. He didn’t have any down time. We begged him to slow down a little, but he was focused on his music 100%.” He did allow Prince would throw around a basketball every now and again, but he mainly stuck to music.
He had a weird thing where he couldn't or wouldn't sleep, so much so he would get into that dreamlike state, think of a song, then take the elevator down to record it.
It is beyond irony that he died in that elevator.
Guessing this will be what the Brits call 'death-by-misadventure', and what the Carver County Coroner will call 'polypharmacy'.