Some people find the word smurf offensive, some people find the word bitch offensive. I think just about anything that can be construed as an insult has the potential to bother you. It's up to individual morality and preconceptions about what words stand for. For me, it's not what you say nearly so much as it is how you say it.

I think you're making a pretty ridiculous generalization about people having trouble with the word bitch.