Isn't you oun memeories that can be lost part of that everything?
The statement is open. Even if you personally could interpret in a way which means what it was bad decision... it changes nothing, since we clearly see Reapers leaving Earth and have the same note that Shepard stopped Reapers threat. No matter what it was meant to be, he did exactly the same thing as in all other endings, just in his own way.
Sure, because all are now Reapers.
I would rather say "like Reapers". Reapers clearly aren't exactly what Catalyst wanted to see, because in that case he should have "reaperised everything".
But yeah. No harvesting, and everybody are free to live as they live now. Reapers had accomplished their goals.
No it won't.
At least from Catalyst's perspective.
I am aware of idea, that it is possible to new organic life to develop, but... let's face it, Mass Effect is not "hard science fantasy" which takes into account all possibilities. Because, Catalyst goal is stupid in the first place, since it only concerns ONE galaxy of myriads of others. Well, its possible to argue that where are Catalysts in all the Galaxies, but... Thats too far into speculations.