By definition, INCELs don’t, at least directly, choose that life style.
Incels refuse to man up to the reality that many men live alone, especially feeling alone when around their own woman. It just is that women are socially superior, ie. much like animals prior the garden of Eden not needing to till the ground to grow and eat food, women do not need to work to get into relationships. Incels have refused that they would have to work for it.
Granted they were fed the feminist BS that men should be nice and sensitive in a world of ruthless females looking for thug partners, but they fully bought the “toxic masculinity” thing. The world does not realize that it actually is the feminine which is highly callous and toxic to anyone around it enough to see how even women drive each other crazy.
As the book saying goes, men kill people, women drive people crazy to kill people.