I hope you aren't serious about that.
He raises a fair point.
There may or may not be life in space.
If there is, we'd have an exceedingly difficult time locating them.
And if we could locate them, chances are they would be so far away that we'd never even be able to properly contact them, let alone meet up.
But, only a fraction of the Ocean's have been explored. There are countless numbers of new species of life living down there which we've yet to discover. They could teach us some amazing things. They could be of use in providing resources for the world, or their biology may even lead us to technological advances. (Learning how something survives in extreme conditions helps us devise ways to also survive in extreme conditions.)
The search for life in space isn't necesarilly pointless (far from it), but it most definitely should not be our primary goal in cosmology and the reasons for entering space.
I would like to see more on Oceanic research, but that's a different topic altogether.