Rum Distilling Question

[Dis-diller]

I am about to distill my first batch of rum...i have a small question.... ive read in several places on this website (articles like: Hook Rum, and Rum From a Reflux Still) that many people like to make their hearts to tails cut very late (Ie. 80-90 Celcius/176-194 Faherenheit or even higher) for better flavour. I've also read that Propanol (rubbing alcohol) starts to come off at 82 Celcius (180 F)...so then why would anyone want to include this with their hearts? Isn't propanol bad for you? Why would people be including anything that comes off at above 78 Celcius/172 F (Ethanol) in with the hearts?

Any answers greatly appreciated

Thanks