Won't that stop you from achieving certain goals you have in your life? I mean, if you say "I hope one day I will be the greatest xy" then you will do everything do achieve this. If you say "I don't care how this ends up" and you don't care you won't achieve anything because there are other people who DO care and who are working to achieve a "certain end". And they probably will. Or at least more likely than you.
Well, we can recognize our desires and care about them. All I advocate is not chaining yourself to them. Create a certain level of friction, if you will.
"I will do everything to achieve this but I will still be happy if I don't."
I see hope as relying on certain ends for your pleasure. I think pleasure can be found everywhere at anytime.