We've almost wiped ourselves out in a nuclear war in the 70ies. If that would have happened, would it have been worth it? Probably not.
Beyond immediate increase in inequality, which I agree could be worth it in the long run if this was the only problem, we're playing a dangerous game.
The smartest and most capable species on the planet that dominates it for exactly this reason, is creating something even smarter and more capable than itself in the hope it'd help make its life easier.
Hmm.