system
A chat on subreddit /r/NoStupidQuestions
human
Your right, but I think what op means is when a guy says they're horny on the Internet where is the bunch of gross women who show up offering to help.
gpt
I think women have been socialized to take on the burden of self control. If you look at most religious traditions women are expected to cover their bodies to deter male attention. Women are called slutty if they have multiple partners and in many cultures have value directly tied to their virginity. For some women their life and future depend on their virginity. Also pregnancy can ruin a young girl's life and guys don't have to think about that as much.

On a physiological level, penetration alone rarely  results in a female orgasm so more of the pleasurable experiences of sex (including penetration) can be better replicated with toys and fingers.

Also women often  have a greater need for emotional intimacy as a part of physical intimacy. And women are usually just more empathetic and less violent (statistically 80% of violent crimes are committed by men). This makes sense if you consider that many of the traditionally masculine traits are more violent in nature.