mediumwhat am-i
Illustration for riddle: You do not want me but 
If you get me you do not want to lose me
Can you figure out this riddle?

You do not want me but If you get me you do not want to lose me

Common Wrong Answers

Debt

People often want to avoid debt, but unlike a lawsuit, they might not have the same emotional or legal stakes involved in losing it.

Cold

While getting a cold is undesirable, once you have it, you simply want to recover rather than having a complex relationship like that of a lawsuit.

Job

Most people seek employment and want to keep their job, so this guess does not fit the riddle's premise of wanting to avoid something that one doesn't want to lose.