Do you accept invitations out?

I don't usually accept invitations unless its with a Sim I want my Sim to interact with, such as a love interest or someone they met as an acquaintance that they want to interact with as a Whim. Most of the time I decline them. I do agree with what everyone is saying about having an option to respond with "in an hour". It would be nice if there was a way to respond back and postpone. I always feel mean when I tell them I can't hang out.

I also find it kind of weird when a child wants to hang out with one of my adult Sims for whatever reason...