Shadowverse

I've gotten to the point where I start apologizing before finishing off my opponent.

I only apologized once, when my "cancer hand" was too strong, and I felt ashamed to defeat such a weak Knight with such an amazing setup.
But often, opponents would chicken out and leave on the first or second round, not even realizing that I had a terrible card in my hand. By the way, the same thing happens when I play Haven and bring out two birds and a tiger on the third round.