Why did Riker's father never return?

[LMFAOschwarz]

I don't know...after seeing how Kyle Riker was, I sort of gained a sympathy for Will. Growing up with a dad like that, it's a wonder he turned out as good as he did!

 

[Mojochi]

Because two pompous, bloated windbags aboard would have disrupted the environmental controls too much

YOU are my FRIEND!