I work in IT too, though I never have experience working in other sectors, but I think it is very tiring to have a stutter in IT, I still remember that day very vividly where I bombed on one job interview because I stutter severely throughout the discussion , I was so disappointed on myself, I literally thought "is this how it gonna be", "what is the point of my life", and of course cried for hours in bathroom. Now It is alot improved because of constant interaction with clients and end users somewhat it really helps , still get stutter during job interview but that because of anxiety. I think anxiety makes my stutter worse. And Yeah I have also felt throughout my life if I didn't have stutter I would have achieved so many things