There are people whose feelings about it vary, but there are also people whose feelings about it are consistent but they do it anyway, and that sometimes gets mistaken for variability.
I taught at a community college for a few years and have spoken at conferences. Those engagements are immensely enjoyable and energizing to me because they're performances. The roles of the audience and presenter are clear. I do my thing and the audience does theirs. I get that energy and enjoyment (a ton more of it, actually) performing live music. I walk off a stage jazzed. It's a wonderful high.
The dinner party scenario is absorbs energy. It's not necessarily less enjoyable than performing, but because it's peer-to-peer there's so much more protocol, nuance, and thought than performing. Even if I'm talking with people I know well I don't walk away energized. With people who are new to me it's a lot of work. Like anything it has come easier w/ practice.