When a system arrives an a chosen universe the matter of who the host shall be is often not of any importance, the general idea of system philosophy is that the advantages given by the systems presence will instantly make any reasonable person drop their entire life's plan to dance to the systems song.
smart systems have realised this is not the best way, they have come to the conclusion that an ideal host should either already be interested in the system subject or in a incredibly desperate situation, preferably both as very few systems but the most powerful can sell themselves based on consept alone.
That is what smart systems do
I am not a smart system.
when I blipped into existence on this planet I very simply identified the closest sentient being that I could find, and went directly towards them as fast as my imaterial body could take me.
This was not a good decision.
It had been almost an hour after I entered the universe when I found she who would be my host.
And without even looking to see who I would be fused with I very instantly bonded with my host.
It was only after that when I decided to take a look at the person who would be acting as my user.
'Its a child'
Mistakes were made.