If you hate it, then you hate it, although there are things you can try to make it better. I used to hate running on treadmills, until I found that I don't mind it if I listen to techno music with a tempo matching my gait. The funny thing about this is, I can't stand techno at any other time.

I think one of the keys to exercising regularly is finding "lifehacks" like this that reduce the misery.