Thank you to everyone who left wishes for me to feel better yesterday! I was too zonked to respond to most of them, but I still appreciate it. I'm not feeling awesome today but I feel better than yesterday, at least.
Periodically I have someone ask me to do a modeling commission. When I was doing this as a hobby, I would accept one once in a while, but I don't any more as a rule. Here's why.
1. I can't afford it, and neither can you. My present earnings at DAZ normally average out to about $40-$50 an hour. Making a full outfit, with multiple pieces, good morphs, and good textures, takes more than 20 hours. Most people think they're spending a lot if they offer $30 and resale rights, and the resale rights aren't worth much because the outfit is one I wouldn't be able to sell (because it's a very niche item, or for reason #2). Compared to spending that 20 hours making something I know will sell 200 copies in my DAZ store, plus catalog sales, I literally can't afford to do most commissions.
2. You want something of questionable legality because IT IS ILLEGAL TO CHARGE FOR FAN ART. The United States has strict copyright and trademark laws. If you have seen a movie or show in English that wasn't a fan-sub or fan-dub, it has a U.S. license and is protected by U.S. law. This means that the rights are held by a large corporation with many lawyers.
Fan art is tolerated by these corporations because it is free, or because it falls under Fair Use as parody or criticism. As soon as money changes hands, they're going to start taking notice. They have to; if they don't defend their copyright they'll eventually lose it.
Some DAZ artists come very close to the line on this issue. A lot of them are not in the United States; they're in countries where it would be harder for the corporations to prosecute them. I'm an American, I live in the Seattle area, and I'm not risking it. Next.
3. You want something I don't want to make. This is actually way, way behind the other two, but I do occasionally get a request I would turn down even if it were 100% legal. Making an exact copy in a new medium of something that already exists is boring for me. Similarly, I have my own sexual interests that probably do not coincide directly with yours, and I'm not going to make a private product for that sort of thing either. The third category for this is that it's something fiddly and unmarketable that I just don't care enough about, like a full painted anthro armadillo-person with armored shell, tail and ears, or a business suit with holes in the back for a tail and wings. If you've got a passion project like that you need to learn to make it yourself, and in fact I'll be happy to help you with your process.