Yes, my wife and I considered not for environmental reasons. My parents thought we were nuts citing the threat of nuclear war when they were kids and everyone continuing to have kids then. They’ve come around to understand our hesitation now, mostly, but it was distressing that they couldn’t understand , if not agree, with hesitating.
Of course, the environment is just one thing that gives us pause these days. People are crazy. Politicians and the laws they create are (or the dissolution of certain laws is) crazy. Plenty of reasons to pause.