We have lots of Monarchs here, especially if I take caterpillars inside in spring so that the wasps don't kill them. At this time of year I'm the bad guy and have to eradicate some to ensure the survival of my swan plants for spring.
We have to be careful pruning and take any chrysalises inside to finish off. Hundreds of Monarchs have launched themselves from my finger for their first flight and they often swoop on me in the garden, I assume because they like the colors on my shirts. I have had an old one land on me and die, which I thought was pretty special.