I concur, @Tin-Man, that there are some folks who seem addicted to outrage. And there are people who are offended by, for instance, language that is in no way hateful (the word fuck comes to mind). That’s not the sort of offense I was talking about. I will always be offended by, for example, racist words. And, imo, if someone is not offended by those words, they are cut from the same cloth as the person saying them. Another example: I will always be offended by jokes about sexual assault. It is offensive behavior. Plain and simple. Also, if I’m in earshot of someone spewing homophobic bullshit, it helps me to know I want nothing to do with them. Being offended is a tool. I use it for a number of things. Hell, on occasion, I’ve used the tool of being offended to inform how I vote!
Everyone is offended by some things. There are a ton of things I find perfectly acceptable that others find offensive and vice versa. I think religion is offensive. I think Trump is offensive. I don’t think drag shows are offensive. The list goes on and on. You may find the word offensive to be offensive 
Being offended by something happens in degrees. But it does happen. To all of us.