Do you think we’re real or living in a simulation?

I'd say real but it wouldn't matter. The question itself is meaningless. If we are in a simulated or non-simulated environment, there is no way to tell. Experience is reality. Just like in books, dreams and flashbacks the effect of experiencing them is very real. The only real difference is discontinuity between one person and everyone else.

And discontinuity between one person and everyone else is very, very easily explainable. Most well adjusted folk don't actually like talking about nebulous topics. I am included in this group.