Can we please stop congratulating pregnant women who weren't trying to get pregnant?

Where I’m from, none of the women get pregnant on purpose, but everyone congratulates them. Why do people do this? If I total my car and it’s my fault, are you going to congratulate me when I get a new car? No, you’re gonna think I’m an idiot for crashing my car. Now, can we save the congratulations for married people who aren’t struggling?