Just a short history of me when I was younger and I'm sure quite typical with all young men.
I, like most men back in our younger days I'm sure, was a walking talking creature living to receive some form of sexual pleasure. It didn't take much to get that thing between my legs aroused and ready. One big difference between us men and women is that women generally need an emotional feeling to get them aroused. With men like me just the sight of a shapely pair of a woman's legs (for example) is all that is needed to get us fully aroused and ready for action.
While in my late teens into my twenties before I married my big thing was getting hand jobs from girls and later from women. Hand jobs don't require private rooms, beds, etc. The front seat of my car was all that was needed. Of course in a room on a bed would also sure work. Hand jobs would involve my showing the girl/woman my erect penis right off the bat. This alone is a big sexual charge. Next, the girl/woman would have her hand on it. Again; another big charge itself. Then she'd get to see the pleasure she is bringing me and finally see me shooting my cum. This too most men enjoy having women see us do. All the while I'm visually stimulated seeing her body next to me and above all feeling her body. With me my big turn on thing has always been the feel of a girl's/woman's legs. Especially there inner thighs. I absolutely love this soft flesh. Over the years back then I had many a hand wrapped around my cock and had my hand up many a dress.
There was another advantage to these hand jobs. It took away the fears of getting the girl/women pregnant or getting something like the clap. Something I certainly had to think about when the woman with me was a prostitute. In closing, there certainly isn't a thing wrong with this wonderful thing we know as the hand job. I sure had a tremendous amount of sexual pleasure because of them and also sure turned loose a lot of my cum as a result of them.