Plain and simple, dudes are not in relationships because they don't have to be in a relationship to get sex.
Other than that, for me, I don't see the point in getting into a relationship with someone if I don't feel like it's going to benefit me from a Financial perspective. Most women in 2019 are like buying a 1999 Volkswagen. High maintenance and low quality. Because of social media, They want to drive this, wear that, travel here, eat there, etc.
All while not offering much more then they're offering the dude that was smashing them last week, no strings attached