If prostitution is so degrading, risky, and low-paying (for those in the lower tier of the system), why are there still prostitutes? If working at McDonald's o

If prostitution is so degrading, risky, and low-paying (for those in the lower tier of the system), why are there still prostitutes? If working at McDonald's or Walmart is so shitty, why does anyone work at McDonald's or Walmart? Etc. etc.