Yes, like everyone else I have done many stupid things in my time on the planet, maybe not as often now as I have become less uninhibited and spontaneous and tend to think things thru more (perhaps am more boring too though!).
Oh plenty. I'm fairly reckless with few inhibitions, I often appear silly to those around me. It doesn't really bother me what anyone else thinks so I rarely regret anything. Most of my regrets are about things I haven't done, not those I have.
Is this a trick question!? My answer is absolutely yes, and more often than I'd like to admit! Overall I think I've learned from all the stupid things I've done, so there is that bit of good to come out of it.
It was not until I became 'mature' as an adult, did I see just 'how' stupid, my mistakes were.
We grow up most of the time, no matter how well our parents have taught us, with our very own set of 'blinkers'.
Call it being human, or just lacking in good old common sense, or wisdom.
If we are lucky... and our mind has a conscience, we learn....and do not repeat that stupid action, again.
Sadly, I can say a lot of people do.
You would wonder 'why', but it becomes part of their very nature.
They continue to repeat the same mistake, & the sad part is ....some do it willingly.
Not caring who it effects, or the damage it will cause not just them, but others.