I think this every time I read something along the lines of "building blocks of life" in space news. I'm always hearing about how life could be so drastically d

I think this every time I read something along the lines of "building blocks of life" in space news. I'm always hearing about how life could be so drastically different, but NASA seems to always be looking for the conditions you mentioned. We have life on Earth which oxygen is toxic to, for example. It would make more sense if their goal was to find an environment which is the most hospitable to relocate our life to.