Can't believe that this thread is 4 pages. The reason for this is because of dating apps, social media is a variable that plays into this as well.
There have been many stats that have shown this increasing prevalence of male sexlessness started around 2008. Prior to this time period it was fairly consistent and we didn't see too many changes. The biggest variable in 2008 is the increased usage of social media, that's around the time that facebook took off. Prior to facebook there was myspace, though this social media platform wasn't at all nearly as ingrained into society.
However, we see that this trend of male sexlessness really took off in 2014/2015, which is when the dating app tinder emerge onto the scene. I believe that the dating apps are the biggest cause of the changes we see in the dating market compared to previous decades. A woman that is even unattractive and quite overweight can get dozens of matches on tinder within a week of being on there. Ask any woman you know who has a dating app profile and this will be her experience. On the flip side, it's honestly the norm for the vast majority of men to struggle to get matches, if they even get them at all. Even if you get a match, it's highly unlikely you'd even get that woman out on a real date simply because she is entertaining a dozen other guys at that given time that in reality are comparable to you.
There are some other variables that go into this as well. I think pornography often fills in the sexual needs of these men that are not getting the results they want in the dating market. I believe given enough time they develop a pattern where they just give up all together and just rely on porn for sexual gratification. It's a cycle of having poor experiences and no results for your efforts over and over and over. Then these men get frustrated and perhaps put less effort into trying to meet women, which is a normal response. Then they start using porn here and there and because their sexual needs are being met they begin to place even less importance on meeting women. Then the months and years go by and this is a behavioral pattern that they've developed that can become quite difficult to break out of.
I personally am not a big porn user but have had little to no success in the dating market, which eventually lead to me checking out all together. Dating and "the game" should be a fun and enjoyable experience, which I believe is something that a lot of men forget at times. If you aren't having fun or enjoying yourself, or worse it's actually a very negative experience, why would you continue to play in the dating market? A lot of the thoughts and emotions I'd have with some of my experiences in the dating market would be "Man, I just wasted a bunch of my time and energy on some woman who just ghosts me" or something like "I just went on a couple dates with this woman and it resulted in nothing" or "Man, that girl agreed to a date and when I arrived she flaked last minute". This is the reality for the vast majority of men today and it's totally understandable why many end up giving up. Unless you are a masochist, why would one want to continue?
Some stuff for those reading this to consider.