Reasons for a professional name

I use pics from r/earthporn as filler images for test sites. This client loves the test image so much they'd like me to contact the original photographer and see if he'll sell them usage rights to the image.

"Oh sure!" I say, "I'm sure they'll be thrilled. Here, we can look it up right now."

We go to r/earthporn and I find the picture in minutes. The person's username is "TurdsMcpoopsalot*" My eyes widen. The bosses look at each other, wince, and look back at me.

"On second thought, we'll just go with the other stock image that you were telling us about."

Your username is seen by all sorts of people. Some whom you'd never even think of.

*I edited the username a little in an attempt to give ole' Turds some anonymity but, yes, that's essentially what it originally was.

A note for new models

You'll buy clear or nude shoes because some photographer will emphatically tell you that they're, "a modeling essential". You want to be professional, so this sounds serious. You'll cart them around everywhere but you'll never wear them. Eventually you'll leave them at home, where they'll gather dust in your closet. Only a short while after that you'll show up to a shoot where the photographer will assume that you have clear or nude shoes with you. He'll be upset and will seem personally disappointed in you that you don't have them. When you tell him that he should have told you to bring them if he'd wanted them that badly he'll stare at you agog.

"You're a professional model! You should always have them with you! They're a modeling essential!" he'll say in a way that's just as know-it-all and just as emphatic as the first guy was.