Have you ever done something that you think is smart, but it's actually stupid?

I met my ex-boyfriend in Shanghai, talked for a few months, and got married. I didn't get a marriage certificate, but hosted a banquet at home. Later, I ran away from home and suddenly found out that I was pregnant. When I returned to his house, his family abandoned me, suspecting that the child in my belly was not my ex-boyfriend's, and forced me to go to the police station and let me abort the child, suspecting that I was fooling around outside. I was smart at that time, and I was going to give birth to the child to prove my innocence. But I didn't expect that after the child was born, his family didn't want me either. I was completely dumbfounded and regretted what a stupid behavior it was to give birth to the child.