What do you think about saying grace/prayer before dinner at a party?

At my home without guests, I say grace. If I'm hosting guests, I don't say grace - partially because I'm too busy doing other things - but I don't think I ever have done it or would do it.

Last night, our host led the saying of grace for the entire group - not all of which are religious. I felt an awkward vibe, but it's not my home and the host is entitled to do what they want.

Yay or nay?