Offence is totally subjective rather than objective. I think it's a reaction, often involuntary, when something goes against us whether it be actions or words. Whether you own or grow from your reaction is dependent I think. Dependent on you as a person, your head space and your needs and also external factors.

I spent a lot of years in a profession where I wasn't allowed to be 'offended' but had to prove that it was offensive based on what 'normal' people would have found so.... It taught me not that I (as a normal person) should take offence less, but that I didn't need to let it affect me.