In this day in age women complain men don't want to effort and lack maturity? I hate to break it to you the men you are dealing with only want you for sex. They know the game women are playing and that is what they are willing to play. Women are the ones dating nice guy but are repulsed by them. You women rather have sex with the bad boys meaning you're giving reward to the asshole. Many men have simply stop dealing with women period. No dating, no sex no nothing.
Men don't want to invest in women because you give sex for free! You can not blame men for that.