I've always found the whole Santa thing irritating but always went along with it because the kids in my family love it and I teach kindergarten so I have to keep up the pretense. It doesn't bother me to smile & talk Santa with the kids because it means a lot to them so I just shove my personal beliefs aside & keep them smiling. It doesn't hurt me to do this so I don't see what the big deal is.
I never believed in Santa & it didn't affect me in any way. What's funny is that my mother-in-law has insisted on keeping the Santa tradition & still puts the presents out after we've gone to sleep & signs all the tags from "Santa". It's funny but always made me roll my eyes. This year was the first year she didn't do this and to my surprise, I kinda missed it. Go figure I didn't appreciate it when she did it but now that she isn't, I miss it. I'm an idiot sometimes.