Can you tell me 1 reason why you wouldn't want to raise a baby Krogan? Or even a spawn of your own that ends up being the main character in a future game?
Because being the protagonist hero means I don't have the time for it. I could be the greatest parent ever (I'm not) but if I only get to see my kid for a few hours before I take off on the next high risk mission, than that kid isn't getting enough of my time.
Wanting a kid because it would be cool or fun is a really bad reason for having one.
We're not in the position to properly raise a kid and I think you're all forgetting the disgusting, gross, frustrating and otherwise negative sides of rearing a child.
If done right, then our protagonist would die in combat because they were too tired and reacted too slowly... because their kid kept them up all night, vomitted out their breakfast and then we had to mop the floor instead of checking our gear before the mission.
Oh, and the part about actually having your own kid? How do you think this would play out? Female protagonists take a break from the story for a year because of the pregnancy and what follows? How about the male takes a year off after the child is born. I'm sure the mission to assure our survival can wait until we're back on the job.
Seriously, I shouldn't even have to spell it out like this. It's obvious that this is a catastrophically bad idea.