mediumwhat am-i

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.