Russians say that you should not hate the cancer (as in disease) but thank God that he has found you worthy to atone for your sins here and now.
Indeed, and the thought did occur to me that for this reason the example I gave was a bit off. I was just trying to demonstrate how you can hate something dispassionatley; after all, your thoughts never dwell on how bad the cancer cells are. 
The subject of "hate" is very often confused today. Hate can be a virtue, or at least a product of virtue, just as easily as "love".
There are three words in Greek that can be used for the variations of "love". The word "felia" is used for feelings you have toward a friend or something that helps you. "Eros" is a physical love, which is where the word "erotic" comes from. And "agape" means an elevated spiritual love. Greek does not allow these words to be intermixed.
When we talk about love, we must be mindful that we are not talking about passionate love, such as a love of something physical, which is a sin. We are talking about "Agape", a spiritual love that places God always at the forefront. And even "Agape" must be proportional: we cannot love our children, mother, or father, more than Christ.
Similiarly, there are different types of hate. Any kind of passionate hate that we dwell on is bad and most likley a sin. But a spiritual hate is a must. Orthodox Christians must all hate those things that trip us up, and cause us and our loved ones to loose their eternal crown. I hate my sins and only by hating them spiritually can I truly repent. I hate Islam and all of them many forms of heresies that the evil one has laid as traps. I can go on but I hope it is a little clearer now.
Anyway, I don't have much more to say on the matter, but maybe this subject should be broken off into a new thread?