Do you regret how much money you've spent on games or in game items/currency?

The only one I regret was when I fell for a gatcha game when I was younger. I tossed about $200~300 before I realized those games force you to spend constantly and feed on your gambling addiction. It was a fairly expensive loss at the time but in hindsight I'm glad that's all it took from me to learn the lesson. I've seen people lose way more to those predatory game designs.