I have to say... I'm not a huge fan of how a lot of the fandom seems to have taken Murderbot being less touch averse with children as "MB loves children!!! It's going to taking all the Mensah children on fun outings! It's going to have another* baby with ART!"
Because to me it seems much less an active enjoying of their company and more an absence of stressors. It is incapable itself of expressing exactly what is different, but I think I can infer.
Murderbot is extremely touch averse, because for the majority of its existence, clients (and company staff) only initiated physical contact with it for abuse. Much of it violent, likely some of it sexual.
Note that it is clients that bring out the touch aversion. People it's supposed to protect. It has no problem getting physical while fighting. The problem is when it's touched by people it can't fight back against. Now because it doesn't want to, but once because it would not have been able to. It doesn't matter that it knows, rationally, that Mensah or Ratthi or Iris would never hurt it. They stand in vaguely the same place where people who did hurt it stood. So there's a trigger.
But children... children don't carry that potential threat. So there is no (or at least less) of a trigger.
So no, it's not its non-existent biological clock ticking or whatever. It's just discovering the edges lf its trauma.
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* 2.0 was not their child in any way comparable to human parenting. This is made quite clear in the text, but that's a whole other rant.

















