I make icons because I enjoy making icons. Some icon makers may make icon after icon in the same style, but to me making exactly the same icons every time is boring as hell so I'm not going to do it. I enjoy experimenting and I enjoy trying new things.
From time to time I may create a requests post and offer to make icons for people. If you ask me to make you an icon at any other time I probably won't do it. You can try, but I can't guarantee I'll have the time/inclination.