These terms, childfree and childless, are not interchangeable, and can’t be used as blanket descriptions for all people without children. For childfree folks, not having children doesn’t represent a lack, a loss, something missing — it also doesn’t mean we don’t have kids in our lives. In fact, some of us are very involved with kids, we just don’t want our own; I, for example, love hanging out with my partner’s awesome foster kid. For childless people, though, not having children isn’t something to celebrate and defiantly proclaim to the world as a choice.