I used to hate flossing too:

1. Bleeding gums
2. Pain in my fingers from wrapping floss around them
3. Pain in my lips and cheeks from stretching my mouth open to reach back teeth

The bleeding gums go away after flossing regularly for a while. After trying several other flossing tools, I found one that solves the other two problems: the Reach Access Flosser. Its sole downside is that you have to periodically replenish your supply of disposable heads, but this is not very expensive, and the reward is healthier teeth.

I started using this maybe something like five years ago, and it turned me into a flosser after decades of being a non-flosser, so I'm an evangelist for it now.