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The Earth is a grain of sand and the universe is six cubic miles of Beach. To date, life has only been found on Earth but SETI and other programs are still searching.

I wouldn't hold your breath. The search space is large and our search-range is tiny. SETI can only find intelligent life and the evolutionary evidence is not strong that our kind of high-intelligence is particularly successful. We've been around for an eyeblink in evolutionary terms and already we're in danger of destroying our planet (and no, I'm not a tree-hugger, just a realist)

The starting processes of life and life forms evolving are very controversial issues,

Evolution is not controversial at all in mainstream science. The argument inside science (ie amongst the people who spend their lives studying this) ended over a hundred years ago. Starting processes (abiogenesis) still attract some debate within science because we haven't yet fully explained how they could have happened. Most of that debate is about possible mechanisms rather than Behe style "throw your hands in the air and declare God did it"

but if other life forms were found it would add credence to the evolutionary argument.

A bit more than credence, I venture.

Could science and/or open mindedness come up with a another round Earth revolutionary discovery? Time will tell who is correct.

Indeed. But science doesn't feel that it needs those confirmations to be very confident about its current position.

I don't think the current version of SETI will find much either, it's like looking into a bucket of sand along the 6 mile beach.

I tend to agree with the statement that the "continual alteration of life into more efficient/adaptable/complex life forms" is not controversial at all in mainstream science. The Abiogenesis argument is where I disagree. Personally, I think the intellectual, Jesus, was attempting to explain life, compassion, and a higher existence to simple people. But in the end, they choose a common criminal. Sadly, I think the same would happen today. Being a simple guy, I can't understand the complexity of God. However, I try to follow the understanding, compassion and higher intellectual existence advice Jesus spoke of and live accordingly.