Eru indeed gave Pharazon what he asked for. Isn't that the best way to teach people? Pharazon had lots of time to reflect on all his deeds *evil grin*.
My personal opinion about im/mortality (in general, not only in Tolkien) is that whether you believe in afterlife or in souls coming back to live more than once or not, your spirit and your memmory remains alive (not in the sense of fea, but more as in legacy/how people know you/what you've done). Pharazon's memmory that he left behind is not the kind of way he'd like to live
