Because I like to throw situations at players and sit back and watch them fumble the execution and yet always come out on top.

As a fellow dm this always makes me so sad so many experiences this.

For them it is their fantasy same as someone playing a wizard could be casting spells. But yet we never see dm running every monster having antimagic field or legendary resistance.

Let them feel good and invincible! Let tanks be tanks!

DM that plays. That clearly a trap but lets trigger it and see what happens.