I had a discussion with a friend recently and during that discussion, one comment was “Fitted sheets are really both the best and the worst”, of course referencing them as awesome when put on a mattress and the worst when you’re trying to fold them.
What else do we have that would qualify for being awesome, but also the worst in a different context?
Not OP but: you have to eat but most of the best foods make you fat or are bad for you in some other way.