Are both sentences OK?

Is it worth losing all that we've gained?
Is it worth the loss of all that we've gained?

Question

Are both sentences OK?

Is it worth losing all that we've gained?
Is it worth the loss of all that we've gained?

Answer

Yes, both are ok. The first one is more natural.

Answer

Pelin good question.

Both but I would suggest to use the first one. 
Keep going 😄

Answer

Optional……Does it worth loosing our gains? For example in the stock market