I'm not big on "selfies"...but I don't see the harm in it in this case. What's the difference between someone taking a selfie infront of some museum artifact, and someone having a friend take a picture of them in front of said artifact?
Yes, there are amazing, timeless, priceless artifacts all over the museum. Why can't someone view those artifacts, fully appreciate them, AND take a picture "with" them? Most people here make it sound like you can't go into a museum and take a few selfies while at the same time appreciating your surroundings. I don't understand why these things have to be mutually exclusive?
Personally, I would rather have a picture of myself standing next to the Mona Lisa, rather than a picture of "just" the Mona Lisa. Or just a simple memory of the Mona Lisa in my head, no picture at all.
Taking pictures of yourself next to museum artifacts might be a little narcissistic. But I also feel like it could enhance your experience in the long term, having pictures to look back at and appreciate.