Sex, affection, intimacy. They are like food; to someone starving they are the whole universe, to someone who just ate they're just another part of daily life.
"Incels" as a concept is a nebulous term, it conflates terminally online misogynistic weirdos with people who are simply incapable of attracting a mate, mostly men.
The rise of invisible men, MGTOW, etc. is not for nothing. A lot of young men are not getting any, and it's getting worse.
Why that happens is a compound of many things: social media based interactions, dating apps, social disconnect and isolation, maturing later, not having your shit together, etc.
Let's not beat around the bush, not everyone is the same level of attractive, some guys can get by with being broke but hot and cool. Some guys need to be economically established to get women, some guys need to pay for prostitutes to get any.
The real issue is that the internet is an interaction maximizer engine, if you're on dating apps as a man the odds are stacked vastly against you, because there are way more men than women on those platforms and the only selling point you have is your looks. If you are outside in the real world, looks are still very important but you can still be interesting, nice or attractive in other ways.
This doesn't change the fact that I know a guy who is 5'6, balding, wears thick lens glasses, has bad facial aesthetics, a meek and unassertive personality and is just very unremarkable. He's genuinely nice and pleasant, I like him as a guy friend and I've never shunned nor do I intend to. But whenever he's hanging out in a group with me I notice how he's basically invisible to women, only being dealt the minimum interaction from them so as to not cause social friction.
There are a million copes people can come up with: "just take a shower, just get hair implants, hit the gym, become more confident, etc" but the fact of the matter is that he is an incel through no fault of his own, and because of that he has my sympathy. Worst, he's not blackpilled, he's utterly bluepilled which means he is always in this perma hopeful state of "if I'm nice and kind some girl will like me someday!".
Where to even begin?
Would the online incels benefit from going outside, talking to people and leaving their misogyny at home? For sure.
Would all of them get laid? Doubtful.
One of my biggest gripes is how the sexual market is a lot like the economic market, the rich get richer. Confidence flows downstream from success, more success gives you more confidence, failure erodes your confidence. Women are especially very well attuned to subtle cues and involuntary behavior (posture, being relaxed, being able to talk without a stutter, etc).
So I, that have no issues getting laid at all, still profess sympathy for guys who got the short end of the stick.
Like I told a female friend once; "Your issue isn't finding a man to have sex with tonight, it's picking which one you're taking home with you. For the guys, being picked is winning the lottery, and going back home alone is the default expected result."
Women in general (not speaking of autistic women or others who are not "normal") are basically incapable of understanding what that is like. Their contempt and hatred is easy to see, and I take issue with that. I was mind blown when a female friend told me she had a 1 month dry spell and was going crazy. 1 month is a lot to you? You should ask some of the guys I know, that have gone multiple years without getting any!
Also, if you want comedic videos, check out IncelTV on Youtube, I think his videos are both hilariously sad and true.
His video on Female to Male transgender people telling their reality on going from being a woman (valued, accepted, coddled by default) to an incel (short manlet with small frame, zero assertiveness, worthless by default) are very eye opening and telling to any who would try to deny what I said in this post.