Most "incels" and "nice guys" are just sad, lonely people who were the product of poor parenting and irresponsible parents who refused to teach them about relationships, romance, or sex as teenagers.

It all starts with parenting.
If you find the concept of relationships, romance, and sex too “icky” or “inappropriate” to discuss with your kid, you have three choices.

A) Get over it, do your job as a parent, and teach them what they need to know to function as adults. Let them know that you’ll always be there for them.

B) Let someone else in their lives do it. If they’re lucky, it’ll be a trusted adult like a doctor or health class teacher. More likely it’ll be an older sibling or friend, who themselves might not know everything they should.

C) Don’t discuss it in any way and forbid any remotely racy material in the home (including any movie rated above PG-13). Pretend that sex doesn’t exist, and if they wonder where babies come from, your answer is “Don’t worry about it.”

If you answered B or C...you should be ashamed of yourself, and you have no right to complain that your teen ended up engaging in perverted, harmful behavior. You let someone else teach them for you most of these young men diverted themselves into watching pornography and japanese hentai, anime, and lolicon pornograpy. Making them believe what they see in fiction as a form of real life giving us the societial problem we have today.

Instead of going out to help these young men we leave it to be dealt with others who rather demonize them as pedophiles and mass murderers and who bully them outright which is sadly pushing these young men into a deep dark black hole of pessimistic depression, pain, & suffering with no way out other than suicide.

If any of them had just been taught the basics of sex and been given some validation as teens, terms such as “incels” and “niceguys” would be borderline nonexistent today and we would not have cancerous & toxic bullying groups who rather see them dead or imprisoned.