It looks like the French electorate have faced the same choice that was offered to the US electorate, and the British electorate -
Choose the 'least worst' candidate.
In this case, I believe they have done the right thing - anything would be better than a modern-day Nazi, and as Ich has convincingly pointed out, Macron is far from being a much worse choice in the long run.
I would also suggest that for the Americans Hilary Clinton was far less of a dubious choice than Mr Trump, and it's a very good thing that Mr Trump does not have access to America's nuclear deterrent.
For ourselves, there was obviously no contest whatsoever.
In the case of Mr Corbyn's Labour Party against a brick, it would still have been better to elect the brick, which at least, if it could do no good, could also have the saving grace of doing no harm.