Then if you think you've succeeded in imagining how to do it, then DO IT. Make some.
I did'nt ask you to count noses and toes. I asked you to imagine how to MAKE life. If it's within the realm of imagination, much less the realm of possiblity of random events, then MAKE some.
Why?
I know we've gone to the moon. I'm confident, if we had the will, we coukld go to Mars. That I personally won't and can't do either of these things proves nothing.
It is entirely within the capability of current technology to make a mycoplasma. It would, however, be expensive, and since the scientific world knows that vitalism was disproven in 1828 (though apparenly news of this hasn't penetrated much of FR), there's really no good reason to do it. It would prove nothing.
"You think you know how stars form from gas? Make one!"
"You think you know how continents collide? Collide a couple!"