Oddly, I was just thinking about this earlier this morning, though not at all in relation to you. I do swear, and a lot, but I also get upset by blasphemy. Honestly I can overlook when people use the word "God" because that can be a generic term as well as a specific one. It's when "Jesus" or "Christ" is used that I really feel hurt. Just hurt, if the person isn't aware I'm a Christian. Hurt and angry if the person is being deliberately offensive.

I respect that you don't swear, and I do try not to swear when people might find it offensive, but obviously I'm fond of using it in my writing.