Write for your reader, not yourself.
Use pronouns when you can.
State your major point(s) first before going into details.
Answer:
Normally its the pleasure of doing so or they are just in need of something (i.e. robbing a bank-in need of money). Most people who do something wrong to get something they want do it for the thrill or the pleasure.
Voldemort trying to get the stone, but Harry stopping him.
I think it would be “very beautiful” but I’m not sure- good luck with your work!!
