Abiogenesis is ultimately unrepeatable even if it did occur, the best origin of life researchers could ever do is demonstrate that life could be produced under laboratory conditions. Not only would this require a lot of intelligence and deliberate manipulation of all the components involved, but as such it would not prove that such an event could actually happen in nature. The creation of life in a lab would only demonstrate that intelligence can produce life, it would not be repeating true abiogenesis. Also, the origin of life on Earth, whatever its source, is something that happened in the past and can't be repeated.
The best we could do is to try duplicate what we think happened but that's not necessarily replicating what actually happened. It would not replicate what would have happened in nature even if the origin of life were a natural occurrence. This is because any effort to do so would have to be made under carefully controlled laboratory conditions that would be designed to prevent the products from being destroyed. This would be a necessity to allow the necessary process to occur within a reasonable amount of time.
Consequently, no effort to produce life in a laboratory would ever be a true recreation of producing life under naturalistic conditions. The best you could do is demonstrate the possibility given ideal conditions. The result is that true totally naturalistic abiogenesis could never be replicated even if it happened. The result is there cannot legitimately be considered science about the past.
