How would they reproduce without a working cell to invade? My guess is that cells came before viruses and viruses are actually descended from cells that became more and more efficient at their processes until they shed most cellular function relying on their prey to reproduce for them.
Yeah, I agree with mee.
Viruses need organisms to live off of. Therefor viruses couldn't have existed before other life.
Technically the viruses do not need an organism to live rather a molecular machinery is need to be provided. The first cell had the same challenge than the viruses, they require some kind of machinery to replicated their protein and genetic code. You have to wonder were the machinery came from. The cellular orgnization was not as it is nowadays, it was probably a loose and choatic system. Therefore some DNA particle could "borrow" the machinery of the loose entities, replicated and spread. These loose DNA particles then probalby evolve intoviruses and adapted to more organize and stringent entities which probably ressemble cell found nowadays.
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