I'll come at you from the son's perspective a bit. Granted I don't remember having a stutter till around 10, but my family more than friends, classmates or strangers were the ones that gave me the most grief (typical "Talk Slower", "Enunciate", "Open your mouth", "Think about what you want to say"...). I'm not sure if my parents thought that therapy would do more harm that good, or really what was in their minds but I personally hold the belief that they should have done *something* to help me. Not knowing really anything about stuttering, and being ridiculed by my own family led me to internalize it, and I believe pushed me into being more of a covert stutterer. Much like the other posters, I think that (circumstances aside) you, your wife, and son would most likely be better off seeing a professional to weigh your options at the very least, and seek any type of treatment or help that is available. Best case scenario: your son could be one of the "lucky ones" for spontaneous fluency, but (and this is coming from somebody that has never seen a SLP, or had therapy sessions) it is better to be seen and not need the treatment, than need it later on and regret not starting sooner.