Is it normal to like to like to look at other nude men?

I enjoy going to a nearby nude beach and walking around naked looking at other naked men (and women) with the main intention of masturbating with another man - either with or without touching each other. It is exciting to never know whether I will meet up with a similar person whilst I walk around. When I see another man touching his semi-erect penis, I get excited and start doing the same. We therefore could often end up masturbating in front of each other. It is good. I then go home. Nothing more is required. I never kiss or carry out anything other than some touching. I am 60 years old and happily married, but like this kind of action - more so during the past 5 years or so.