I have 7 kids. One is on the spectrum, one has add, odd, and ocd. We also think that my 5 year old has some minor SN (aspergerish) but my other children are neurotypical. My oldest has the most severe issues but her father is not the father of my other 6 children (who have the same father) sure some of it is genetic but I feel like it can be a crap shoot as well.
Even with my SN kids it wouldnt stop me from having another.