No. I used to use rooting hormone (the powder) and then stopped completely one day. There was no difference whatsoever in how well cuttings root. Based on that experience, I would say skip the rooting hormone. Maybe in some special stubborn cases you might want to try it, but I haven't touched the stuff in years. The powder also has some kind of fungicide in it which I find useful for really large exposed cuts, but after 6-7 years in my garage I think the hormone in that bottle has gone pretty thoroughly bad. These products have a shelf life.
I think a lot of people use rooting hormone thinking it's somehow helpful without ever paying attention to whether it was necessary in the first place. As part of a ritual, as it were, and I understand the importance of rituals. You don't want to get that stuff on your hands, as it is not so human-friendly.
