For a real friend? Absolutely! I'll hunt them down. For a coworker or loose acquaintance? I care a little less, but it's still nice to see occasional baby photos and vacation pics.
I can't believe people would fake politeness about this! No wonder we're all so damn lonely. If you really don't care, why not just say that those things bore you? It would probably make for deeper connections with everyone involved. You wouldn't have to waste your time with them, and they wouldn't waste their time with you!
If creating new life and welcoming a new person into your world is "mundane", or exploring new corners of this tiny world that we are confined to is not interesting to you, then you really gotta tell me about the mind-blowing stuff you're doing every day that takes precedence.